409 relations: Acid dissociation constant, Acid–base reaction, Activation energy, Agricultural chemistry, Ahmad Y. al-Hassan, Air (classical element), Al-Biruni, Al-Kindi, Alchemy, Alessandro Volta, Alkali metal, Allotropy, Alloy, Alpha particle, American Chemical Society, American Society for Neurochemistry, Amount of substance, Analytical chemistry, Ancient Egypt, Ancient Greece, Ancient Rome, Antoine Lavoisier, Aqueous solution, Arab world, Arabic, Argon, Aristotle, Arrhenius equation, Astrochemistry, Astrophysics, Atmosphere of Earth, Atmospheric chemistry, Atom, Atomic nucleus, Atomic number, Atomic orbital, Atomic theory, Atomism, Avicenna, Avogadro constant, Avogadro's law, Base (chemistry), Becquerel, Beer–Lambert law, Berkley Books, Biochemistry, Biology, Bose–Einstein condensate, Botany, Boyle's law, ..., Branches of science, Brønsted–Lowry acid–base theory, Bronze, Byzantine Empire, Byzantine science, Calculus, Carbon, Carbon dioxide, Carbon-12, Carl Wilhelm Scheele, CAS Registry Number, Cengage, Cf., Charles's law, Chemical Abstracts Service, Chemical biology, Chemical bond, Chemical composition, Chemical compound, Chemical element, Chemical engineering, Chemical equation, Chemical equilibrium, Chemical industry, Chemical Institute of Canada, Chemical kinetics, Chemical physics, Chemical property, Chemical reaction, Chemical Society of Peru, Chemical structure, Chemical substance, Chemical synthesis, Chemical thermodynamics, Cheminformatics, Chemist, Chlorine, Christopher Glaser, Chromatography, Classical element, Classical Greece, Classical physics, Comparison of software for molecular mechanics modeling, Computational chemistry, Computer program, Concept, Condensed matter physics, Conformer, Conservation of energy, Conservation of mass, Coordination complex, Coordination number, Cosmochemistry, Covalent bond, Crystal, Crystal structure, De rerum natura, Decimetre, Democritus, Density, Diamond, Dissociation (chemistry), Distillation, Dmitri Mendeleev, Dynamic equilibrium, Early Muslim conquests, Earth (classical element), Ecology, Edward Frankland, Egypt, Egyptian language, Electricity, Electrochemistry, Electron, Electron paramagnetic resonance, Electronegativity, Elementary particle, Elementary reaction, Endergonic reaction, Endothermic process, Energy, Entropy, Environmental chemistry, Epicurus, Ernest Rutherford, Etymology of chemistry, Exergonic reaction, Exothermic reaction, Experiment, Femtochemistry, Fermionic condensate, Ferromagnetism, Fick's laws of diffusion, Fire (classical element), Flavor, Flow chemistry, Force, Forensic science, Formula unit, Francis Bacon, Friedrich Wöhler, Gas, Gay-Lussac's law, Genetics, Geochemistry, Geology, Georg Ernst Stahl, Gibbs free energy, Gilbert N. Lewis, Glass, Glossary of chemistry terms, Gold, Green chemistry, Ground state, Group (periodic table), Helium, Hellenistic period, Henry Cavendish, Henry Moseley, Henry's law, Hess's law, History of chemistry, History of metallurgy in the Indian subcontinent, History of thermodynamics, Hossein Nasr, Humphry Davy, Hydrogen, Hydrogen bond, Hydrogen sulfide, Hydrogenation, Hydronium, Hydroxide, Ilm (Arabic), Immunochemistry, Immunohistochemistry, Infrared spectroscopy, Inorganic chemistry, Inorganic compound, Interaction, Interface (matter), Intermolecular force, International Union of Pure and Applied Chemistry, International Year of Chemistry, Invariant mass, Ion, Ionic bonding, Ionic compound, Ionization energy, Iron, Isolated system, Isotope, IUPAC books, IUPAC nomenclature of inorganic chemistry, IUPAC nomenclature of organic chemistry, J. J. Thomson, Jabir ibn Hayyan, Jan Baptist van Helmont, Jöns Jacob Berzelius, Jean-Baptiste Dumas, John Dalton, John Mayow, John Newlands (chemist), John William Strutt, 3rd Baron Rayleigh, Joseph Black, Joseph Priestley, Josiah Willard Gibbs, Julius Lothar Meyer, Justus von Liebig, Krypton, Laboratory, Laboratory glassware, Law of definite proportions, Law of multiple proportions, Le Chatelier's principle, Lewis acids and bases, Linus Pauling, Liquid, List of chemistry societies, List of chemists, List of commonly available chemicals, List of compounds, List of important publications in chemistry, List of largest chemical producers, List of unsolved problems in chemistry, Lithium, Logarithm, Lone pair, Lucretius, Magnet, Marcellin Berthelot, Marie Curie, Mass number, Mass spectrometry, Mass–energy equivalence, Materials science, Mathematical chemistry, Mathematics, Matter, Mechanical equilibrium, Mechanochemistry, Medication, Medicinal chemistry, Mesopotamia, Metal, Microwave spectroscopy, Mixture, Molar concentration, Molecular biology, Molecular mechanics, Molecular orbital, Molecular physics, Molecule, Morris Kline, Multipole expansion, Nanotechnology, Nasir al-Din al-Tusi, Natural product, Neon, Nervous system, Network covalent bonding, Neurochemistry, Neutralization (chemistry), Neutron, Niels Bohr, Nitrogen, Noble gas, Nuclear chemistry, Nuclear magnetic resonance, Nuclear reaction, Nuclear transmutation, Nucleon, Ocean chemistry, Octet rule, Oenology, Ore, Organic chemistry, Organic compound, Organism, Organometallic chemistry, Outline of chemistry, Oxford, Oxford University Press, Oxidation state, Oxide, Oxidizing agent, Oxygen, Paramagnetism, Particle, Pearson Education, Period (periodic table), Periodic systems of small molecules, Periodic table, Periodic trends, Petrochemistry, PH, Pharmacology, Phase transition, Philosopher's stone, Philosophy of chemistry, Phlogiston theory, Phonon, Phosphate, Photochemistry, Photon, Physical chemistry, Physical organic chemistry, Physics, Phytochemistry, Pierre Curie, Plasma (physics), Polyatomic ion, Polymer, Polymer chemistry, Pressure, Primo Levi, Proton, Quantization (physics), Quantum, Quantum chemistry, Quantum mechanics, Radical (chemistry), Radioactive decay, Radiochemistry, Radon, Raoult's law, Raymond Chang (chemist), Reaction intermediate, Reaction mechanism, Rearrangement reaction, Redox, Reducing agent, Refractive index, Renaissance, Robert Boyle, Robert Briffault, Robert Hooke, Royal Australian Chemical Institute, Royal Netherlands Chemical Society, Royal Society of Chemistry, Salt, Salt (chemistry), Scientific method, Scientific Revolution, Silicate minerals, Silicon dioxide, Soap, Society of Chemical Industry, Sodium, Sodium bicarbonate, Sodium chloride, Solid, Solid-state chemistry, Solution, Sonochemistry, Special relativity, Spectral line, Spectroscopy, State of matter, Statistical mechanics, Stepwise reaction, Structure, Sucrose, Sulfur, Supercritical fluid, Supramolecular chemistry, Surface science, Svante Arrhenius, Table of nuclides, Temperature, The Canadian Encyclopedia, The central science, The Independent, The Sceptical Chymist, Theoretical chemistry, Thermochemistry, Thermodynamic free energy, Thermodynamics, Tin, Triple point, Ultrasound, United States dollar, University of Cambridge, University of Manchester, University of Sheffield, Urea, Valence bond theory, Valence electron, Van der Waals force, Voltaic pile, Volume, VSEPR theory, Water (classical element), William Prout, William Ramsay, Woodward–Hoffmann rules, World Association of Theoretical and Computational Chemists, World War II, Xenon, Zosimos of Panopolis. Expand index (359 more) »
Acid dissociation constant
An acid dissociation constant, Ka, (also known as acidity constant, or acid-ionization constant) is a quantitative measure of the strength of an acid in solution.
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Acid–base reaction
An acid–base reaction is a chemical reaction that occurs between an acid and a base, which can be used to determine pH.
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Activation energy
In chemistry and physics, activation energy is the energy which must be available to a chemical or nuclear system with potential reactants to result in: a chemical reaction, nuclear reaction, or other various other physical phenomena.
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Agricultural chemistry
Agricultural chemistry is the study of both chemistry and biochemistry which are important in agricultural production, the processing of raw products into foods and beverages, and in environmental monitoring and remediation.
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Ahmad Y. al-Hassan
Ahmad Yousef Al-Hassan (أحمد يوسف الحسن) (June 25, 1925 – April 28, 2012) was a Palestinian/Syrian/Canadian historian of Arabic and Islamic science and technology, educated in Jerusalem, Cairo, and London with a PhD in Mechanical engineering from University College London.
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Air (classical element)
Air is one of the four classical elements in ancient Greek philosophy and in Western alchemy.
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Al-Biruni
Abū Rayḥān Muḥammad ibn Aḥmad Al-Bīrūnī (Chorasmian/ابوریحان بیرونی Abū Rayḥān Bērōnī; New Persian: Abū Rayḥān Bīrūnī) (973–1050), known as Al-Biruni (البيروني) in English, was an IranianD.J. Boilot, "Al-Biruni (Beruni), Abu'l Rayhan Muhammad b. Ahmad", in Encyclopaedia of Islam (Leiden), New Ed., vol.1:1236–1238.
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Al-Kindi
Abu Yūsuf Yaʻqūb ibn ʼIsḥāq aṣ-Ṣabbāḥ al-Kindī (أبو يوسف يعقوب بن إسحاق الصبّاح الكندي; Alkindus; c. 801–873 AD) was an Arab Muslim philosopher, polymath, mathematician, physician and musician.
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Alchemy
Alchemy is a philosophical and protoscientific tradition practiced throughout Europe, Africa, Brazil and Asia.
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Alessandro Volta
Alessandro Giuseppe Antonio Anastasio Volta (18 February 1745 – 5 March 1827) was an Italian physicist, chemist, and a pioneer of electricity and power,Giuliano Pancaldi, "Volta: Science and culture in the age of enlightenment", Princeton University Press, 2003.
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Alkali metal
The alkali metals are a group (column) in the periodic table consisting of the chemical elements lithium (Li), sodium (Na), potassium (K),The symbols Na and K for sodium and potassium are derived from their Latin names, natrium and kalium; these are still the names for the elements in some languages, such as German and Russian.
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Allotropy
Allotropy or allotropism is the property of some chemical elements to exist in two or more different forms, in the same physical state, known as allotropes of these elements.
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Alloy
An alloy is a combination of metals or of a metal and another element.
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Alpha particle
Alpha particles consist of two protons and two neutrons bound together into a particle identical to a helium-4 nucleus.
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American Chemical Society
The American Chemical Society (ACS) is a scientific society based in the United States that supports scientific inquiry in the field of chemistry.
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American Society for Neurochemistry
The American Society for Neurochemistry (ASN) is a professional society for neurochemists and neuroscientists from North, Central, and South America and the Caribbean, whose research concerns the role and interactions of small molecules (proteins, peptides, nucleic acids, lipids, sugars) in the development, growth, function, and pathology of the nervous system.
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Amount of substance
Amount of substance (symbol for the quantity is 'n') is a standard-defined quantity that measures the size of an ensemble of elementary entities, such as atoms, molecules, electrons, and other particles.
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Analytical chemistry
Analytical chemistry studies and uses instruments and methods used to separate, identify, and quantify matter.
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Ancient Egypt
Ancient Egypt was a civilization of ancient Northeastern Africa, concentrated along the lower reaches of the Nile River - geographically Lower Egypt and Upper Egypt, in the place that is now occupied by the countries of Egypt and Sudan.
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Ancient Greece
Ancient Greece was a civilization belonging to a period of Greek history from the Greek Dark Ages of the 13th–9th centuries BC to the end of antiquity (AD 600).
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Ancient Rome
In historiography, ancient Rome is Roman civilization from the founding of the city of Rome in the 8th century BC to the collapse of the Western Roman Empire in the 5th century AD, encompassing the Roman Kingdom, Roman Republic and Roman Empire until the fall of the western empire.
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Antoine Lavoisier
Antoine-Laurent de Lavoisier (also Antoine Lavoisier after the French Revolution;; 26 August 17438 May 1794) CNRS (Centre National de la Recherche Scientifique) was a French nobleman and chemist who was central to the 18th-century chemical revolution and who had a large influence on both the history of chemistry and the history of biology.
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Aqueous solution
An aqueous solution is a solution in which the solvent is water.
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Arab world
The Arab world (العالم العربي; formally: Arab homeland, الوطن العربي), also known as the Arab nation (الأمة العربية) or the Arab states, currently consists of the 22 Arab countries of the Arab League.
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Arabic
Arabic (العَرَبِيَّة) or (عَرَبِيّ) or) is a Central Semitic language that first emerged in Iron Age northwestern Arabia and is now the lingua franca of the Arab world. It is named after the Arabs, a term initially used to describe peoples living from Mesopotamia in the east to the Anti-Lebanon mountains in the west, in northwestern Arabia, and in the Sinai peninsula. Arabic is classified as a macrolanguage comprising 30 modern varieties, including its standard form, Modern Standard Arabic, which is derived from Classical Arabic. As the modern written language, Modern Standard Arabic is widely taught in schools and universities, and is used to varying degrees in workplaces, government, and the media. The two formal varieties are grouped together as Literary Arabic (fuṣḥā), which is the official language of 26 states and the liturgical language of Islam. Modern Standard Arabic largely follows the grammatical standards of Classical Arabic and uses much of the same vocabulary. However, it has discarded some grammatical constructions and vocabulary that no longer have any counterpart in the spoken varieties, and has adopted certain new constructions and vocabulary from the spoken varieties. Much of the new vocabulary is used to denote concepts that have arisen in the post-classical era, especially in modern times. During the Middle Ages, Literary Arabic was a major vehicle of culture in Europe, especially in science, mathematics and philosophy. As a result, many European languages have also borrowed many words from it. Arabic influence, mainly in vocabulary, is seen in European languages, mainly Spanish and to a lesser extent Portuguese, Valencian and Catalan, owing to both the proximity of Christian European and Muslim Arab civilizations and 800 years of Arabic culture and language in the Iberian Peninsula, referred to in Arabic as al-Andalus. Sicilian has about 500 Arabic words as result of Sicily being progressively conquered by Arabs from North Africa, from the mid 9th to mid 10th centuries. Many of these words relate to agriculture and related activities (Hull and Ruffino). Balkan languages, including Greek and Bulgarian, have also acquired a significant number of Arabic words through contact with Ottoman Turkish. Arabic has influenced many languages around the globe throughout its history. Some of the most influenced languages are Persian, Turkish, Spanish, Urdu, Kashmiri, Kurdish, Bosnian, Kazakh, Bengali, Hindi, Malay, Maldivian, Indonesian, Pashto, Punjabi, Tagalog, Sindhi, and Hausa, and some languages in parts of Africa. Conversely, Arabic has borrowed words from other languages, including Greek and Persian in medieval times, and contemporary European languages such as English and French in modern times. Classical Arabic is the liturgical language of 1.8 billion Muslims and Modern Standard Arabic is one of six official languages of the United Nations. All varieties of Arabic combined are spoken by perhaps as many as 422 million speakers (native and non-native) in the Arab world, making it the fifth most spoken language in the world. Arabic is written with the Arabic alphabet, which is an abjad script and is written from right to left, although the spoken varieties are sometimes written in ASCII Latin from left to right with no standardized orthography.
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Argon
Argon is a chemical element with symbol Ar and atomic number 18.
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Aristotle
Aristotle (Ἀριστοτέλης Aristotélēs,; 384–322 BC) was an ancient Greek philosopher and scientist born in the city of Stagira, Chalkidiki, in the north of Classical Greece.
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Arrhenius equation
The Arrhenius equation is a formula for the temperature dependence of reaction rates.
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Astrochemistry
Astrochemistry is the study of the abundance and reactions of molecules in the Universe, and their interaction with radiation.
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Astrophysics
Astrophysics is the branch of astronomy that employs the principles of physics and chemistry "to ascertain the nature of the astronomical objects, rather than their positions or motions in space".
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Atmosphere of Earth
The atmosphere of Earth is the layer of gases, commonly known as air, that surrounds the planet Earth and is retained by Earth's gravity.
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Atmospheric chemistry
Atmospheric chemistry is a branch of atmospheric science in which the chemistry of the Earth's atmosphere and that of other planets is studied.
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Atom
An atom is the smallest constituent unit of ordinary matter that has the properties of a chemical element.
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Atomic nucleus
The atomic nucleus is the small, dense region consisting of protons and neutrons at the center of an atom, discovered in 1911 by Ernest Rutherford based on the 1909 Geiger–Marsden gold foil experiment.
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Atomic number
The atomic number or proton number (symbol Z) of a chemical element is the number of protons found in the nucleus of an atom.
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Atomic orbital
In quantum mechanics, an atomic orbital is a mathematical function that describes the wave-like behavior of either one electron or a pair of electrons in an atom.
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Atomic theory
In chemistry and physics, atomic theory is a scientific theory of the nature of matter, which states that matter is composed of discrete units called atoms.
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Atomism
Atomism (from Greek ἄτομον, atomon, i.e. "uncuttable", "indivisible") is a natural philosophy that developed in several ancient traditions.
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Avicenna
Avicenna (also Ibn Sīnā or Abu Ali Sina; ابن سینا; – June 1037) was a Persian polymath who is regarded as one of the most significant physicians, astronomers, thinkers and writers of the Islamic Golden Age.
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Avogadro constant
In chemistry and physics, the Avogadro constant (named after scientist Amedeo Avogadro) is the number of constituent particles, usually atoms or molecules, that are contained in the amount of substance given by one mole.
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Avogadro's law
Avogadro's law (sometimes referred to as Avogadro's hypothesis or Avogadro's principle) is an experimental gas law relating the volume of a gas to the amount of substance of gas present.
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Base (chemistry)
In chemistry, bases are substances that, in aqueous solution, release hydroxide (OH−) ions, are slippery to the touch, can taste bitter if an alkali, change the color of indicators (e.g., turn red litmus paper blue), react with acids to form salts, promote certain chemical reactions (base catalysis), accept protons from any proton donor, and/or contain completely or partially displaceable OH− ions.
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Becquerel
The becquerel (symbol: Bq) is the SI derived unit of radioactivity.
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Beer–Lambert law
The Beer–Lambert law, also known as Beer's law, the Lambert–Beer law, or the Beer–Lambert–Bouguer law relates the attenuation of light to the properties of the material through which the light is travelling.
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Berkley Books
Berkley Books is an imprint of Penguin Group (USA) that began as an independent company in 1955.
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Biochemistry
Biochemistry, sometimes called biological chemistry, is the study of chemical processes within and relating to living organisms.
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Biology
Biology is the natural science that studies life and living organisms, including their physical structure, chemical composition, function, development and evolution.
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Bose–Einstein condensate
A Bose–Einstein condensate (BEC) is a state of matter of a dilute gas of bosons cooled to temperatures very close to absolute zero.
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Botany
Botany, also called plant science(s), plant biology or phytology, is the science of plant life and a branch of biology.
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Boyle's law
Boyle's law (sometimes referred to as the Boyle–Mariotte law, or Mariotte's law) is an experimental gas law that describes how the pressure of a gas tends to increase as the volume of the container decreases.
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Branches of science
The branches of science, also referred to as sciences, "scientific fields", or "scientific disciplines" are commonly divided into three major groups.
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Brønsted–Lowry acid–base theory
The Brønsted–Lowry theory is an acid–base reaction theory which was proposed independently by Johannes Nicolaus Brønsted and Thomas Martin Lowry in 1923.
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Bronze
Bronze is an alloy consisting primarily of copper, commonly with about 12% tin and often with the addition of other metals (such as aluminium, manganese, nickel or zinc) and sometimes non-metals or metalloids such as arsenic, phosphorus or silicon.
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Byzantine Empire
The Byzantine Empire, also referred to as the Eastern Roman Empire and Byzantium, was the continuation of the Roman Empire in its eastern provinces during Late Antiquity and the Middle Ages, when its capital city was Constantinople (modern-day Istanbul, which had been founded as Byzantium).
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Byzantine science
Byzantine science played an important role in the transmission of classical knowledge to the Islamic world and to Renaissance Italy, and also in the transmission of Islamic science to Renaissance Italy.
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Calculus
Calculus (from Latin calculus, literally 'small pebble', used for counting and calculations, as on an abacus), is the mathematical study of continuous change, in the same way that geometry is the study of shape and algebra is the study of generalizations of arithmetic operations.
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Carbon
Carbon (from carbo "coal") is a chemical element with symbol C and atomic number 6.
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Carbon dioxide
Carbon dioxide (chemical formula) is a colorless gas with a density about 60% higher than that of dry air.
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Carbon-12
Carbon-12 is the more abundant of the two stable isotopes of carbon (Carbon-13 being the other), amounting to 98.93% of the element carbon; its abundance is due to the triple-alpha process by which it is created in stars.
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Carl Wilhelm Scheele
Carl Wilhelm Scheele (9 December 1742 – 21 May 1786) was a Swedish Pomeranian and German pharmaceutical chemist.
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CAS Registry Number
A CAS Registry Number, also referred to as CASRN or CAS Number, is a unique numerical identifier assigned by the Chemical Abstracts Service (CAS) to every chemical substance described in the open scientific literature (currently including all substances described from 1957 through the present, plus some substances from the early or mid 1900s), including organic and inorganic compounds, minerals, isotopes, alloys and nonstructurable materials (UVCBs, of unknown, variable composition, or biological origin).
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Cengage
Cengage is an educational content, technology, and services company for the higher education, K-12, professional, and library markets worldwide.
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Cf.
The abbreviation cf. (short for the confer/conferatur, both meaning "compare") is used in writing to refer the reader to other material to make a comparison with the topic being discussed.
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Charles's law
Charles's law (also known as the law of volumes) is an experimental gas law that describes how gases tend to expand when heated.
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Chemical Abstracts Service
Chemical Abstracts Service (CAS) is a division of the American Chemical Society.
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Chemical biology
Chemical biology is a scientific discipline spanning the fields of chemistry and biology.
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Chemical bond
A chemical bond is a lasting attraction between atoms, ions or molecules that enables the formation of chemical compounds.
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Chemical composition
Chemical composition refers to the identity and relative number of the chemical elements that make up any particular compound.
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Chemical compound
A chemical compound is a chemical substance composed of many identical molecules (or molecular entities) composed of atoms from more than one element held together by chemical bonds.
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Chemical element
A chemical element is a species of atoms having the same number of protons in their atomic nuclei (that is, the same atomic number, or Z).
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Chemical engineering
Chemical engineering is a branch of engineering that uses principles of chemistry, physics, mathematics and economics to efficiently use, produce, transform, and transport chemicals, materials and energy.
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Chemical equation
A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae, wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side.
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Chemical equilibrium
In a chemical reaction, chemical equilibrium is the state in which both reactants and products are present in concentrations which have no further tendency to change with time, so that there is no observable change in the properties of the system.
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Chemical industry
The chemical industry comprises the companies that produce industrial chemicals.
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Chemical Institute of Canada
The Chemical Institute of Canada is a Canadian professional umbrella organization for chemists (Canadian Society for Chemistry), chemical engineers (Canadian Society for Chemical Engineering) and chemical technologists (Canadian Society for Chemical Technology).
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Chemical kinetics
Chemical kinetics, also known as reaction kinetics, is the study of rates of chemical processes.
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Chemical physics
Chemical physics is a subdiscipline of chemistry and physics that investigates physicochemical phenomena using techniques from atomic and molecular physics and condensed matter physics; it is the branch of physics that studies chemical processes from the point of view of physics.
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Chemical property
A chemical property is any of a material's properties that becomes evident during, or after, a chemical reaction; that is, any quality that can be established only by changing a substance's chemical identity.
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Chemical reaction
A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.
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Chemical Society of Peru
Chemical Society of Peru is a non-profit scientific institution devoted to chemistry.
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Chemical structure
A chemical structure determination includes a chemist's specifying the molecular geometry and, when feasible and necessary, the electronic structure of the target molecule or other solid.
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Chemical substance
A chemical substance, also known as a pure substance, is a form of matter that consists of molecules of the same composition and structure.
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Chemical synthesis
Chemical synthesis is a purposeful execution of chemical reactions to obtain a product, or several products.
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Chemical thermodynamics
Chemical thermodynamics is the study of the interrelation of heat and work with chemical reactions or with physical changes of state within the confines of the laws of thermodynamics.
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Cheminformatics
Cheminformatics (also known as chemoinformatics, chemioinformatics and chemical informatics) is the use of computer and informational techniques applied to a range of problems in the field of chemistry.
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Chemist
A chemist (from Greek chēm (ía) alchemy; replacing chymist from Medieval Latin alchimista) is a scientist trained in the study of chemistry.
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Chlorine
Chlorine is a chemical element with symbol Cl and atomic number 17.
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Christopher Glaser
Christopher Glaser (1615 – between 1670 and 1678), a pharmaceutical chemist of the 17th century.
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Chromatography
Chromatography is a laboratory technique for the separation of a mixture.
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Classical element
Classical elements typically refer to the concepts in ancient Greece of earth, water, air, fire, and aether, which were proposed to explain the nature and complexity of all matter in terms of simpler substances.
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Classical Greece
Classical Greece was a period of around 200 years (5th and 4th centuries BC) in Greek culture.
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Classical physics
Classical physics refers to theories of physics that predate modern, more complete, or more widely applicable theories.
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Comparison of software for molecular mechanics modeling
This is a list of computer programs that are predominantly used for molecular mechanics calculations.
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Computational chemistry
Computational chemistry is a branch of chemistry that uses computer simulation to assist in solving chemical problems.
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Computer program
A computer program is a collection of instructions for performing a specific task that is designed to solve a specific class of problems.
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Concept
Concepts are mental representations, abstract objects or abilities that make up the fundamental building blocks of thoughts and beliefs.
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Condensed matter physics
Condensed matter physics is the field of physics that deals with the macroscopic and microscopic physical properties of matter.
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Conformer
Conformer is a clear plastic shell fitted after Eye removal operation if the final artificial eye is not available at the time of surgery to hold the shape of the eye socket and allow the eyelids to blink over the shell without rubbing the suture line.
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Conservation of energy
In physics, the law of conservation of energy states that the total energy of an isolated system remains constant, it is said to be ''conserved'' over time.
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Conservation of mass
The law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as system's mass cannot change, so quantity cannot be added nor removed.
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Coordination complex
In chemistry, a coordination complex consists of a central atom or ion, which is usually metallic and is called the coordination centre, and a surrounding array of bound molecules or ions, that are in turn known as ligands or complexing agents.
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Coordination number
In chemistry, crystallography, and materials science the coordination number, also called ligancy, of a central atom in a molecule or crystal is the number of atoms, molecules or ions bonded to it.
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Cosmochemistry
Cosmochemistry (from Greek κόσμος kósmos, "universe" and χημεία khemeía) or chemical cosmology is the study of the chemical composition of matter in the universe and the processes that led to those compositions.
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Covalent bond
A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms.
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Crystal
A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.
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Crystal structure
In crystallography, crystal structure is a description of the ordered arrangement of atoms, ions or molecules in a crystalline material.
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De rerum natura
De rerum natura (On the Nature of Things) is a first-century BC didactic poem by the Roman poet and philosopher Lucretius (c. 99 BC – c. 55 BC) with the goal of explaining Epicurean philosophy to a Roman audience.
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Decimetre
The decimetre (SI symbol dm) is a unit of length in the metric system, equal to one tenth of a metre (the International System of Units base unit of length), ten centimetres or 1/0.254 (approximately 3.93700787) inches.
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Democritus
Democritus (Δημόκριτος, Dēmókritos, meaning "chosen of the people") was an Ancient Greek pre-Socratic philosopher primarily remembered today for his formulation of an atomic theory of the universe.
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Density
The density, or more precisely, the volumetric mass density, of a substance is its mass per unit volume.
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Diamond
Diamond is a solid form of carbon with a diamond cubic crystal structure.
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Dissociation (chemistry)
Dissociation in chemistry and biochemistry is a general process in which molecules (or ionic compounds such as salts, or complexes) separate or split into smaller particles such as atoms, ions or radicals, usually in a reversible manner.
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Distillation
Distillation is the process of separating the components or substances from a liquid mixture by selective boiling and condensation.
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Dmitri Mendeleev
Dmitri Ivanovich Mendeleev (a; 8 February 18342 February 1907 O.S. 27 January 183420 January 1907) was a Russian chemist and inventor.
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Dynamic equilibrium
In chemistry, a dynamic equilibrium exists once a reversible reaction ceases to change its ratio of reactants/products, but substances move between the chemicals at an equal rate, meaning there is no net change.
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Early Muslim conquests
The early Muslim conquests (الفتوحات الإسلامية, al-Futūḥāt al-Islāmiyya) also referred to as the Arab conquests and early Islamic conquests began with the Islamic prophet Muhammad in the 7th century.
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Earth (classical element)
Earth is one of the classical elements, in some systems numbering four along with air, fire, and water.
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Ecology
Ecology (from οἶκος, "house", or "environment"; -λογία, "study of") is the branch of biology which studies the interactions among organisms and their environment.
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Edward Frankland
Sir Edward Frankland, (18 January 1825 – 9 August 1899) was a British chemist.
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Egypt
Egypt (مِصر, مَصر, Khēmi), officially the Arab Republic of Egypt, is a transcontinental country spanning the northeast corner of Africa and southwest corner of Asia by a land bridge formed by the Sinai Peninsula.
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Egyptian language
The Egyptian language was spoken in ancient Egypt and was a branch of the Afro-Asiatic languages.
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Electricity
Electricity is the set of physical phenomena associated with the presence and motion of electric charge.
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Electrochemistry
Electrochemistry is the branch of physical chemistry that studies the relationship between electricity, as a measurable and quantitative phenomenon, and identifiable chemical change, with either electricity considered an outcome of a particular chemical change or vice versa.
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Electron
The electron is a subatomic particle, symbol or, whose electric charge is negative one elementary charge.
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Electron paramagnetic resonance
Electron paramagnetic resonance (EPR) or electron spin resonance (ESR) spectroscopy is a method for studying materials with unpaired electrons.
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Electronegativity
Electronegativity, symbol ''χ'', is a chemical property that describes the tendency of an atom to attract a shared pair of electrons (or electron density) towards itself.
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Elementary particle
In particle physics, an elementary particle or fundamental particle is a particle with no substructure, thus not composed of other particles.
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Elementary reaction
An elementary reaction is a chemical reaction in which one or more chemical species react directly to form products in a single reaction step and with a single transition state.
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Endergonic reaction
In chemical thermodynamics, an endergonic reaction (also called a heat absorb nonspontaneous reaction or an unfavorable reaction) is a chemical reaction in which the standard change in free energy is positive, and energy is absorbed.
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Endothermic process
The term endothermic process describes the process or reaction in which the system absorbs energy from its surroundings, usually in the form of heat.
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Energy
In physics, energy is the quantitative property that must be transferred to an object in order to perform work on, or to heat, the object.
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Entropy
In statistical mechanics, entropy is an extensive property of a thermodynamic system.
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Environmental chemistry
Environmental chemistry is the scientific study of the chemical and biochemical phenomena that occur in natural places.
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Epicurus
Epicurus (Ἐπίκουρος, Epíkouros, "ally, comrade"; 341–270 BC) was an ancient Greek philosopher who founded a school of philosophy now called Epicureanism.
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Ernest Rutherford
Ernest Rutherford, 1st Baron Rutherford of Nelson, HFRSE LLD (30 August 1871 – 19 October 1937) was a New Zealand-born British physicist who came to be known as the father of nuclear physics.
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Etymology of chemistry
In the history of science, the etymology of the word chemistry is debatable.
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Exergonic reaction
An exergonic reaction is a chemical reaction where the change in the free energy is negative (there is a net release of free energy), indicating a spontaneous reaction.
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Exothermic reaction
An exothermic reaction is a chemical reaction that releases energy by light or heat.
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Experiment
An experiment is a procedure carried out to support, refute, or validate a hypothesis.
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Femtochemistry
Femtochemistry is the area of physical chemistry that studies chemical reactions on extremely short timescales (approximately 10−15 seconds or one femtosecond, hence the name) in order to study the very act of atoms within molecules (reactants) rearranging themselves to form new molecules (products).
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Fermionic condensate
A fermionic condensate is a superfluid phase formed by fermionic particles at low temperatures.
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Ferromagnetism
Ferromagnetism is the basic mechanism by which certain materials (such as iron) form permanent magnets, or are attracted to magnets.
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Fick's laws of diffusion
Fick's laws of diffusion describe diffusion and were derived by Adolf Fick in 1855.
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Fire (classical element)
Fire has been an important part of all cultures and religions from pre-history to modern day and was vital to the development of civilization.
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Flavor
Flavor (American English) or flavour (British English; see spelling differences) is the sensory impression of food or other substance, and is determined primarily by the chemical senses of taste and smell.
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Flow chemistry
In flow chemistry, a chemical reaction is run in a continuously flowing stream rather than in batch production.
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Force
In physics, a force is any interaction that, when unopposed, will change the motion of an object.
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Forensic science
Forensic science is the application of science to criminal and civil laws, mainly—on the criminal side—during criminal investigation, as governed by the legal standards of admissible evidence and criminal procedure.
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Formula unit
A formula unit in chemistry is the empirical formula of any ionic or covalent network solid compound used as an independent entity for stoichiometric calculations.
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Francis Bacon
Francis Bacon, 1st Viscount St Alban, (22 January 15619 April 1626) was an English philosopher, statesman, scientist, jurist, orator, and author.
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Friedrich Wöhler
Friedrich Wöhler (31 July 1800 – 23 September 1882) was a German chemist, best known for his synthesis of urea, but also the first to isolate several chemical elements.
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Gas
Gas is one of the four fundamental states of matter (the others being solid, liquid, and plasma).
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Gay-Lussac's law
Gay-Lussac's law can refer to several discoveries made by French chemist Joseph Louis Gay-Lussac (1778–1850) and other scientists in the late 18th and early 19th centuries pertaining to thermal expansion of gases and the relationship between temperature, volume, and pressure.
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Genetics
Genetics is the study of genes, genetic variation, and heredity in living organisms.
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Geochemistry
Geochemistry is the science that uses the tools and principles of chemistry to explain the mechanisms behind major geological systems such as the Earth's crust and its oceans.
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Geology
Geology (from the Ancient Greek γῆ, gē, i.e. "earth" and -λoγία, -logia, i.e. "study of, discourse") is an earth science concerned with the solid Earth, the rocks of which it is composed, and the processes by which they change over time.
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Georg Ernst Stahl
Georg Ernst Stahl (22 October 1659 – 24 May 1734) was a German chemist, physician and philosopher.
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Gibbs free energy
In thermodynamics, the Gibbs free energy (IUPAC recommended name: Gibbs energy or Gibbs function; also known as free enthalpy to distinguish it from Helmholtz free energy) is a thermodynamic potential that can be used to calculate the maximum of reversible work that may be performed by a thermodynamic system at a constant temperature and pressure (isothermal, isobaric).
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Gilbert N. Lewis
Gilbert Newton Lewis (October 25 (or 23), 1875 – March 23, 1946) was an American physical chemist known for the discovery of the covalent bond and his concept of electron pairs; his Lewis dot structures and other contributions to valence bond theory have shaped modern theories of chemical bonding.
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Glass
Glass is a non-crystalline amorphous solid that is often transparent and has widespread practical, technological, and decorative usage in, for example, window panes, tableware, and optoelectronics.
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Glossary of chemistry terms
Most of the terms listed in Wikipedia glossaries are already defined and explained within Wikipedia itself.
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Gold
Gold is a chemical element with symbol Au (from aurum) and atomic number 79, making it one of the higher atomic number elements that occur naturally.
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Green chemistry
Green chemistry, also called sustainable chemistry, is an area of chemistry and chemical engineering focused on the designing of products and processes that minimize the use and generation of hazardous substances.
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Ground state
The ground state of a quantum mechanical system is its lowest-energy state; the energy of the ground state is known as the zero-point energy of the system.
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Group (periodic table)
In chemistry, a group (also known as a family) is a column of elements in the periodic table of the chemical elements.
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Helium
Helium (from lit) is a chemical element with symbol He and atomic number 2.
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Hellenistic period
The Hellenistic period covers the period of Mediterranean history between the death of Alexander the Great in 323 BC and the emergence of the Roman Empire as signified by the Battle of Actium in 31 BC and the subsequent conquest of Ptolemaic Egypt the following year.
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Henry Cavendish
Henry Cavendish FRS (10 October 1731 – 24 February 1810) was a British natural philosopher, scientist, and an important experimental and theoretical chemist and physicist.
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Henry Moseley
Henry Gwyn Jeffreys Moseley (23 November 1887 – 10 August 1915) was an English physicist, whose contribution to the science of physics was the justification from physical laws of the previous empirical and chemical concept of the atomic number.
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Henry's law
In chemistry, Henry's law is a gas law that states that the amount of dissolved gas is proportional to its partial pressure in the gas phase.
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Hess's law
Hess' law of constant heat summation, also known as Hess' law (or Hess's law), is a relationship in physical chemistry named after Germain Hess, a Swiss-born Russian chemist and physician who published it in 1840.
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History of chemistry
The history of chemistry represents a time span from ancient history to the present.
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History of metallurgy in the Indian subcontinent
The history of metallurgy in the Indian subcontinent began prior to the 3rd millennium BCE and continued well into the British Raj.
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History of thermodynamics
The history of thermodynamics is a fundamental strand in the history of physics, the history of chemistry, and the history of science in general.
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Hossein Nasr
Hossein Nasr (سید حسین نصر, born April 7, 1933) is an Iranian professor emeritus of Islamic studies at George Washington University, and an Islamic philosopher.
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Humphry Davy
Sir Humphry Davy, 1st Baronet (17 December 177829 May 1829) was a Cornish chemist and inventor, who is best remembered today for isolating, using electricity, a series of elements for the first time: potassium and sodium in 1807 and calcium, strontium, barium, magnesium and boron the following year, as well as discovering the elemental nature of chlorine and iodine.
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Hydrogen
Hydrogen is a chemical element with symbol H and atomic number 1.
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Hydrogen bond
A hydrogen bond is a partially electrostatic attraction between a hydrogen (H) which is bound to a more electronegative atom such as nitrogen (N), oxygen (O), or fluorine (F), and another adjacent atom bearing a lone pair of electrons.
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Hydrogen sulfide
Hydrogen sulfide is the chemical compound with the chemical formula H2S.
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Hydrogenation
Hydrogenation – to treat with hydrogen – is a chemical reaction between molecular hydrogen (H2) and another compound or element, usually in the presence of a catalyst such as nickel, palladium or platinum.
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Hydronium
In chemistry, hydronium is the common name for the aqueous cation, the type of oxonium ion produced by protonation of water.
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Hydroxide
Hydroxide is a diatomic anion with chemical formula OH−.
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Ilm (Arabic)
‘Ilm (علم "knowledge") is the Islamic term for knowledge.
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Immunochemistry
Immunochemistry is a branch of chemistry that involves the study of the molecular mechanisms underlying the function of the immune system, especially the nature of antibodies, antigens and their interactions.
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Immunohistochemistry
Immunohistochemistry (IHC) involves the process of selectively imaging antigens (proteins) in cells of a tissue section by exploiting the principle of antibodies binding specifically to antigens in biological tissues.
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Infrared spectroscopy
Infrared spectroscopy (IR spectroscopy or vibrational spectroscopy) involves the interaction of infrared radiation with matter.
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Inorganic chemistry
Inorganic chemistry deals with the synthesis and behavior of inorganic and organometallic compounds.
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Inorganic compound
An inorganic compound is typically a chemical compound that lacks C-H bonds, that is, a compound that is not an organic compound, but the distinction is not defined or even of particular interest.
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Interaction
Interaction is a kind of action that occur as two or more objects have an effect upon one another.
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Interface (matter)
In the physical sciences, an interface is the boundary between two spatial regions occupied by different matter, or by matter in different physical states.
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Intermolecular force
Intermolecular forces (IMF) are the forces which mediate interaction between molecules, including forces of attraction or repulsion which act between molecules and other types of neighboring particles, e.g., atoms or ions.
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International Union of Pure and Applied Chemistry
The International Union of Pure and Applied Chemistry (IUPAC) is an international federation of National Adhering Organizations that represents chemists in individual countries.
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International Year of Chemistry
The International Year of Chemistry 2011 (IYC 2011) was a year-long commemorative event for the achievements of chemistry and its contributions to humankind.
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Invariant mass
The invariant mass, rest mass, intrinsic mass, proper mass, or in the case of bound systems simply mass, is the portion of the total mass of an object or system of objects that is independent of the overall motion of the system.
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Ion
An ion is an atom or molecule that has a non-zero net electrical charge (its total number of electrons is not equal to its total number of protons).
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Ionic bonding
Ionic bonding is a type of chemical bonding that involves the electrostatic attraction between oppositely charged ions, and is the primary interaction occurring in ionic compounds.
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Ionic compound
In chemistry, an ionic compound is a chemical compound composed of ions held together by electrostatic forces termed ionic bonding.
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Ionization energy
The ionization energy (Ei) is qualitatively defined as the amount of energy required to remove the most loosely bound electron, the valence electron, of an isolated gaseous atom to form a cation.
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Iron
Iron is a chemical element with symbol Fe (from ferrum) and atomic number 26.
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Isolated system
In physical science, an isolated system is either of the following.
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Isotope
Isotopes are variants of a particular chemical element which differ in neutron number.
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IUPAC books
The International Union of Pure and Applied Chemistry publishes many books, which contain its complete list of definitions.
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IUPAC nomenclature of inorganic chemistry
In chemical nomenclature, the IUPAC nomenclature of inorganic chemistry is a systematic method of naming inorganic chemical compounds, as recommended by the International Union of Pure and Applied Chemistry (IUPAC).
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IUPAC nomenclature of organic chemistry
In chemical nomenclature, the IUPAC nomenclature of organic chemistry is a systematic method of naming organic chemical compounds as recommended by the International Union of Pure and Applied Chemistry (IUPAC).
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J. J. Thomson
Sir Joseph John Thomson (18 December 1856 – 30 August 1940) was an English physicist and Nobel Laureate in Physics, credited with the discovery and identification of the electron; and with the discovery of the first subatomic particle.
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Jabir ibn Hayyan
Abu Mūsā Jābir ibn Hayyān (جابر بن حیانl fa, often given the nisbas al-Bariqi, al-Azdi, al-Kufi, al-Tusi or al-Sufi; fl. c. 721c. 815), also known by the Latinization Geber, was a polymath: a chemist and alchemist, astronomer and astrologer, engineer, geographer, philosopher, physicist, and pharmacist and physician.
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Jan Baptist van Helmont
Jan Baptist van Helmont (12 January 1580 – 30 December 1644) was a Flemish chemist, physiologist, and physician.
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Jöns Jacob Berzelius
Baron Jöns Jacob Berzelius (20 August 1779 – 7 August 1848), named by himself and contemporary society as Jacob Berzelius, was a Swedish chemist.
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Jean-Baptiste Dumas
Jean Baptiste André Dumas (14 July 180010 April 1884) was a French chemist, best known for his works on organic analysis and synthesis, as well as the determination of atomic weights (relative atomic masses) and molecular weights by measuring vapor densities.
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John Dalton
John Dalton FRS (6 September 1766 – 27 July 1844) was an English chemist, physicist, and meteorologist.
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John Mayow
John Mayow FRS (1641–1679) was a chemist, physician, and physiologist who is remembered today for conducting early research into respiration and the nature of air.
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John Newlands (chemist)
John Alexander Reina Newlands (26 November 1837 – 29 July 1898) was a British chemist who did work concerning the periodicity of elements.
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John William Strutt, 3rd Baron Rayleigh
John William Strutt, 3rd Baron Rayleigh, (12 November 1842 – 30 June 1919) was a physicist who, with William Ramsay, discovered argon, an achievement for which he earned the Nobel Prize for Physics in 1904.
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Joseph Black
Joseph Black FRSE FRCPE FPSG (16 April 1728 – 6 December 1799) was a Scottish physician and chemist, known for his discoveries of magnesium, latent heat, specific heat, and carbon dioxide.
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Joseph Priestley
Joseph Priestley FRS (– 6 February 1804) was an 18th-century English Separatist theologian, natural philosopher, chemist, innovative grammarian, multi-subject educator, and liberal political theorist who published over 150 works.
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Josiah Willard Gibbs
Josiah Willard Gibbs (February 11, 1839 – April 28, 1903) was an American scientist who made important theoretical contributions to physics, chemistry, and mathematics.
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Julius Lothar Meyer
Julius Lothar Meyer (19 August 1830 – 11 April 1895) was a German chemist.
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Justus von Liebig
Justus Freiherr von Liebig (12 May 1803 – 18 April 1873) was a German chemist who made major contributions to agricultural and biological chemistry, and was considered the founder of organic chemistry.
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Krypton
Krypton (from translit "the hidden one") is a chemical element with symbol Kr and atomic number 36.
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Laboratory
A laboratory (informally, lab) is a facility that provides controlled conditions in which scientific or technological research, experiments, and measurement may be performed.
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Laboratory glassware
Laboratory glassware refers to a variety of equipment in scientific work traditionally made of glass.
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Law of definite proportions
In chemistry, the law of definite proportion, sometimes called Proust's law or the law of definite composition, or law of constant composition states that a given chemical compound always contains its component elements in fixed ratio (by mass) and does not depend on its source and method of preparation.
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Law of multiple proportions
In chemistry, the law of multiple proportions is one of the basic laws of stoichiometry used to establish the atomic theory, alongside the law of conservation of mass (matter) and the law of definite proportions.
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Le Chatelier's principle
Le Chatelier's principle, also called Chatelier's principle or "The Equilibrium Law", can be used to predict the effect of a change in conditions on some chemical equilibria.
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Lewis acids and bases
A Lewis acid is a chemical species that contains an empty orbital which is capable of accepting an electron pair from a Lewis base to form a Lewis adduct.
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Linus Pauling
Linus Carl Pauling (February 28, 1901 – August 19, 1994) was an American chemist, biochemist, peace activist, author, educator, and husband of American human rights activist Ava Helen Pauling.
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Liquid
A liquid is a nearly incompressible fluid that conforms to the shape of its container but retains a (nearly) constant volume independent of pressure.
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List of chemistry societies
The following is a list of chemistry societies.
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List of chemists
This is a list of chemists.
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List of commonly available chemicals
Many chemicals are commonly available in pure form.
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List of compounds
Compounds are organized into the following lists.
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List of important publications in chemistry
This is a list of important publications in chemistry, organized by field.
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List of largest chemical producers
Chemical & Engineering News publishes an annual list of the world's largest chemical producers by sales, excluding formulated products such as pharmaceutical drugs and coatings.
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List of unsolved problems in chemistry
Unsolved problems in chemistry tend to be questions of the kind "Can we make X chemical compound?", "Can we analyse it?", "Can we purify it?" and are commonly solved rather quickly, but may just as well require considerable efforts to be solved.
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Lithium
Lithium (from lit) is a chemical element with symbol Li and atomic number 3.
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Logarithm
In mathematics, the logarithm is the inverse function to exponentiation.
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Lone pair
In chemistry, a lone pair refers to a pair of valence electrons that are not shared with another atomIUPAC Gold Book definition: and is sometimes called a non-bonding pair.
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Lucretius
Titus Lucretius Carus (15 October 99 BC – c. 55 BC) was a Roman poet and philosopher.
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Magnet
A magnet is a material or object that produces a magnetic field.
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Marcellin Berthelot
Pierre Eugène Marcellin Berthelot FRS FRSE (25 October 1827 – 18 March 1907) was a French chemist and politician noted for the ThomsenendashBerthelot principle of thermochemistry.
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Marie Curie
Marie Skłodowska Curie (born Maria Salomea Skłodowska; 7 November 18674 July 1934) was a Polish and naturalized-French physicist and chemist who conducted pioneering research on radioactivity.
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Mass number
The mass number (symbol A, from the German word Atomgewichte (atomic weight), also called atomic mass number or nucleon number, is the total number of protons and neutrons (together known as nucleons) in an atomic nucleus. It determines the atomic mass of atoms. Because protons and neutrons both are baryons, the mass number A is identical with the baryon number B as of the nucleus as of the whole atom or ion. The mass number is different for each different isotope of a chemical element. This is not the same as the atomic number (Z) which denotes the number of protons in a nucleus, and thus uniquely identifies an element. Hence, the difference between the mass number and the atomic number gives the number of neutrons (N) in a given nucleus:. The mass number is written either after the element name or as a superscript to the left of an element's symbol. For example, the most common isotope of carbon is carbon-12, or, which has 6 protons and 6 neutrons. The full isotope symbol would also have the atomic number (Z) as a subscript to the left of the element symbol directly below the mass number:. This is technically redundant, as each element is defined by its atomic number, so it is often omitted.
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Mass spectrometry
Mass spectrometry (MS) is an analytical technique that ionizes chemical species and sorts the ions based on their mass-to-charge ratio.
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Mass–energy equivalence
In physics, mass–energy equivalence states that anything having mass has an equivalent amount of energy and vice versa, with these fundamental quantities directly relating to one another by Albert Einstein's famous formula: E.
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Materials science
The interdisciplinary field of materials science, also commonly termed materials science and engineering is the design and discovery of new materials, particularly solids.
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Mathematical chemistry
Mathematical chemistry is the area of research engaged in novel applications of mathematics to chemistry; it concerns itself principally with the mathematical modeling of chemical phenomena.
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Mathematics
Mathematics (from Greek μάθημα máthēma, "knowledge, study, learning") is the study of such topics as quantity, structure, space, and change.
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Matter
In the classical physics observed in everyday life, matter is any substance that has mass and takes up space by having volume.
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Mechanical equilibrium
In classical mechanics, a particle is in mechanical equilibrium if the net force on that particle is zero.
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Mechanochemistry
Mechanochemistry or mechanical chemistry is the coupling of mechanical and chemical phenomena on a molecular scale and includes mechanical breakage, chemical behaviour of mechanically stressed solids (e.g., stress-corrosion cracking or enhanced oxidation), tribology, polymer degradation under shear, cavitation-related phenomena (e.g., sonochemistry and sonoluminescence), shock wave chemistry and physics, and even the burgeoning field of molecular machines.
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Medication
A medication (also referred to as medicine, pharmaceutical drug, or simply drug) is a drug used to diagnose, cure, treat, or prevent disease.
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Medicinal chemistry
Medicinal chemistry and pharmaceutical chemistry are disciplines at the intersection of chemistry, especially synthetic organic chemistry, and pharmacology and various other biological specialties, where they are involved with design, chemical synthesis and development for market of pharmaceutical agents, or bio-active molecules (drugs).
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Mesopotamia
Mesopotamia is a historical region in West Asia situated within the Tigris–Euphrates river system, in modern days roughly corresponding to most of Iraq, Kuwait, parts of Northern Saudi Arabia, the eastern parts of Syria, Southeastern Turkey, and regions along the Turkish–Syrian and Iran–Iraq borders.
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Metal
A metal (from Greek μέταλλον métallon, "mine, quarry, metal") is a material (an element, compound, or alloy) that is typically hard when in solid state, opaque, shiny, and has good electrical and thermal conductivity.
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Microwave spectroscopy
Microwave spectroscopy is the spectroscopy method that employs microwaves, i.e. electromagnetic radiation at GHz frequencies, for the study of matter.
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Mixture
In chemistry, a mixture is a material made up of two or more different substances which are mixed.
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Molar concentration
Molar concentration (also called molarity, amount concentration or substance concentration) is a measure of the concentration of a chemical species, in particular of a solute in a solution, in terms of amount of substance per unit volume of solution.
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Molecular biology
Molecular biology is a branch of biology which concerns the molecular basis of biological activity between biomolecules in the various systems of a cell, including the interactions between DNA, RNA, proteins and their biosynthesis, as well as the regulation of these interactions.
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Molecular mechanics
Molecular mechanics uses classical mechanics to model molecular systems.
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Molecular orbital
In chemistry, a molecular orbital (MO) is a mathematical function describing the wave-like behavior of an electron in a molecule.
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Molecular physics
Molecular physics is the study of the physical properties of molecules, the chemical bonds between atoms as well as the molecular dynamics.
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Molecule
A molecule is an electrically neutral group of two or more atoms held together by chemical bonds.
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Morris Kline
Morris Kline (May 1, 1908 – June 10, 1992) was a Professor of Mathematics, a writer on the history, philosophy, and teaching of mathematics, and also a popularizer of mathematical subjects.
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Multipole expansion
A multipole expansion is a mathematical series representing a function that depends on angles—usually the two angles on a sphere.
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Nanotechnology
Nanotechnology ("nanotech") is manipulation of matter on an atomic, molecular, and supramolecular scale.
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Nasir al-Din al-Tusi
Muhammad ibn Muhammad ibn al-Hasan al-Tūsī (محمد بن محمد بن حسن طوسی‎ 18 February 1201 – 26 June 1274), better known as Nasir al-Din Tusi (نصیر الدین طوسی; or simply Tusi in the West), was a Persian polymath, architect, philosopher, physician, scientist, and theologian.
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Natural product
A natural product is a chemical compound or substance produced by a living organism—that is, found in nature.
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Neon
Neon is a chemical element with symbol Ne and atomic number 10.
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Nervous system
The nervous system is the part of an animal that coordinates its actions by transmitting signals to and from different parts of its body.
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Network covalent bonding
A network solid or covalent network solid is a chemical compound (or element) in which the atoms are bonded by covalent bonds in a continuous network extending throughout the material.
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Neurochemistry
Neurochemistry is the study of neurochemicals, including neurotransmitters and other molecules such as psychopharmaceuticals and neuropeptides, that influence the function of neurons.
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Neutralization (chemistry)
In chemistry, neutralization or neutralisation (see spelling differences), is a chemical reaction in which an acid and a base react quantitatively with each other.
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Neutron
| magnetic_moment.
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Niels Bohr
Niels Henrik David Bohr (7 October 1885 – 18 November 1962) was a Danish physicist who made foundational contributions to understanding atomic structure and quantum theory, for which he received the Nobel Prize in Physics in 1922.
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Nitrogen
Nitrogen is a chemical element with symbol N and atomic number 7.
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Noble gas
The noble gases (historically also the inert gases) make up a group of chemical elements with similar properties; under standard conditions, they are all odorless, colorless, monatomic gases with very low chemical reactivity.
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Nuclear chemistry
Nuclear chemistry is the subfield of chemistry dealing with radioactivity, nuclear processes, such as nuclear transmutation, and nuclear properties.
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Nuclear magnetic resonance
Nuclear magnetic resonance (NMR) is a physical phenomenon in which nuclei in a magnetic field absorb and re-emit electromagnetic radiation.
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Nuclear reaction
In nuclear physics and nuclear chemistry, a nuclear reaction is semantically considered to be the process in which two nuclei, or else a nucleus of an atom and a subatomic particle (such as a proton, neutron, or high energy electron) from outside the atom, collide to produce one or more nuclides that are different from the nuclide(s) that began the process.
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Nuclear transmutation
Nuclear transmutation is the conversion of one chemical element or an isotope into another chemical element.
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Nucleon
In chemistry and physics, a nucleon is either a proton or a neutron, considered in its role as a component of an atomic nucleus.
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Ocean chemistry
Ocean chemistry, also known as marine chemistry, is influenced by turbidity currents, sediments, pH levels, atmospheric constituents, metamorphic activity, and ecology.
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Octet rule
The octet rule is a chemical rule of thumb that reflects observation that atoms of main-group elements tend to combine in such a way that each atom has eight electrons in its valence shell, giving it the same electron configuration as a noble gas.
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Oenology
Oenology (enology) is the science and study of wine and winemaking; distinct from viticulture, the agricultural endeavours of vine-growing and of grape-harvesting.
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Ore
An ore is an occurrence of rock or sediment that contains sufficient minerals with economically important elements, typically metals, that can be economically extracted from the deposit.
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Organic chemistry
Organic chemistry is a chemistry subdiscipline involving the scientific study of the structure, properties, and reactions of organic compounds and organic materials, i.e., matter in its various forms that contain carbon atoms.
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Organic compound
In chemistry, an organic compound is generally any chemical compound that contains carbon.
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Organism
In biology, an organism (from Greek: ὀργανισμός, organismos) is any individual entity that exhibits the properties of life.
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Organometallic chemistry
Organometallic chemistry is the study of organometallic compounds, chemical compounds containing at least one chemical bond between a carbon atom of an organic molecule and a metal, including alkaline, alkaline earth, and transition metals, and sometimes broadened to include metalloids like boron, silicon, and tin, as well.
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Outline of chemistry
The following outline is provided as an overview of and topical guide to chemistry: Chemistry – science of atomic matter (matter that is composed of chemical elements), especially its chemical reactions, but also including its properties, structure, composition, behavior, and changes as they relate the chemical reactions.
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Oxford
Oxford is a city in the South East region of England and the county town of Oxfordshire.
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Oxford University Press
Oxford University Press (OUP) is the largest university press in the world, and the second oldest after Cambridge University Press.
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Oxidation state
The oxidation state, sometimes referred to as oxidation number, describes degree of oxidation (loss of electrons) of an atom in a chemical compound.
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Oxide
An oxide is a chemical compound that contains at least one oxygen atom and one other element in its chemical formula.
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Oxidizing agent
In chemistry, an oxidizing agent (oxidant, oxidizer) is a substance that has the ability to oxidize other substances — in other words to cause them to lose electrons.
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Oxygen
Oxygen is a chemical element with symbol O and atomic number 8.
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Paramagnetism
Paramagnetism is a form of magnetism whereby certain materials are weakly attracted by an externally applied magnetic field, and form internal, induced magnetic fields in the direction of the applied magnetic field.
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Particle
In the physical sciences, a particle (or corpuscule in older texts) is a small localized object to which can be ascribed several physical or chemical properties such as volume, density or mass.
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Pearson Education
Pearson Education (see also Pearson PLC) is a British-owned education publishing and assessment service to schools and corporations, as well as directly to students.
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Period (periodic table)
A period in the periodic table is a horizontal row.
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Periodic systems of small molecules
Periodic systems of molecules are charts of molecules similar to the periodic table of the elements.
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Periodic table
The periodic table is a tabular arrangement of the chemical elements, ordered by their atomic number, electron configuration, and recurring chemical properties, whose structure shows periodic trends.
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Periodic trends
Periodic trends are specific patterns that are present in the periodic table that illustrate different aspects of a certain element, including its radius and its electronic properties.
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Petrochemistry
Petrochemistry is a branch of chemistry that studies the transformation of crude oil (petroleum) and natural gas into useful products or raw materials.
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PH
In chemistry, pH is a logarithmic scale used to specify the acidity or basicity of an aqueous solution.
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Pharmacology
Pharmacology is the branch of biology concerned with the study of drug action, where a drug can be broadly defined as any man-made, natural, or endogenous (from within body) molecule which exerts a biochemical or physiological effect on the cell, tissue, organ, or organism (sometimes the word pharmacon is used as a term to encompass these endogenous and exogenous bioactive species).
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Phase transition
The term phase transition (or phase change) is most commonly used to describe transitions between solid, liquid and gaseous states of matter, and, in rare cases, plasma.
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Philosopher's stone
The philosopher's stone, or stone of the philosophers (lapis philosophorum) is a legendary alchemical substance capable of turning base metals such as mercury into gold (from the Greek χρυσός khrusos, "gold", and ποιεῖν poiēin, "to make") or silver.
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Philosophy of chemistry
The philosophy of chemistry considers the methodology and underlying assumptions of the science of chemistry.
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Phlogiston theory
The phlogiston theory is a superseded scientific theory that postulated that a fire-like element called phlogiston is contained within combustible bodies and released during combustion.
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Phonon
In physics, a phonon is a collective excitation in a periodic, elastic arrangement of atoms or molecules in condensed matter, like solids and some liquids.
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Phosphate
A phosphate is chemical derivative of phosphoric acid.
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Photochemistry
Photochemistry is the branch of chemistry concerned with the chemical effects of light.
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Photon
The photon is a type of elementary particle, the quantum of the electromagnetic field including electromagnetic radiation such as light, and the force carrier for the electromagnetic force (even when static via virtual particles).
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Physical chemistry
Physical Chemistry is the study of macroscopic, atomic, subatomic, and particulate phenomena in chemical systems in terms of the principles, practices, and concepts of physics such as motion, energy, force, time, thermodynamics, quantum chemistry, statistical mechanics, analytical dynamics and chemical equilibrium.
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Physical organic chemistry
Physical organic chemistry, a term coined by Louis Hammett in 1940, refers to a discipline of organic chemistry that focuses on the relationship between chemical structures and reactivity, in particular, applying experimental tools of physical chemistry to the study of organic molecules.
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Physics
Physics (from knowledge of nature, from φύσις phýsis "nature") is the natural science that studies matterAt the start of The Feynman Lectures on Physics, Richard Feynman offers the atomic hypothesis as the single most prolific scientific concept: "If, in some cataclysm, all scientific knowledge were to be destroyed one sentence what statement would contain the most information in the fewest words? I believe it is that all things are made up of atoms – little particles that move around in perpetual motion, attracting each other when they are a little distance apart, but repelling upon being squeezed into one another..." and its motion and behavior through space and time and that studies the related entities of energy and force."Physical science is that department of knowledge which relates to the order of nature, or, in other words, to the regular succession of events." Physics is one of the most fundamental scientific disciplines, and its main goal is to understand how the universe behaves."Physics is one of the most fundamental of the sciences. Scientists of all disciplines use the ideas of physics, including chemists who study the structure of molecules, paleontologists who try to reconstruct how dinosaurs walked, and climatologists who study how human activities affect the atmosphere and oceans. Physics is also the foundation of all engineering and technology. No engineer could design a flat-screen TV, an interplanetary spacecraft, or even a better mousetrap without first understanding the basic laws of physics. (...) You will come to see physics as a towering achievement of the human intellect in its quest to understand our world and ourselves."Physics is an experimental science. Physicists observe the phenomena of nature and try to find patterns that relate these phenomena.""Physics is the study of your world and the world and universe around you." Physics is one of the oldest academic disciplines and, through its inclusion of astronomy, perhaps the oldest. Over the last two millennia, physics, chemistry, biology, and certain branches of mathematics were a part of natural philosophy, but during the scientific revolution in the 17th century, these natural sciences emerged as unique research endeavors in their own right. Physics intersects with many interdisciplinary areas of research, such as biophysics and quantum chemistry, and the boundaries of physics are not rigidly defined. New ideas in physics often explain the fundamental mechanisms studied by other sciences and suggest new avenues of research in academic disciplines such as mathematics and philosophy. Advances in physics often enable advances in new technologies. For example, advances in the understanding of electromagnetism and nuclear physics led directly to the development of new products that have dramatically transformed modern-day society, such as television, computers, domestic appliances, and nuclear weapons; advances in thermodynamics led to the development of industrialization; and advances in mechanics inspired the development of calculus.
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Phytochemistry
Phytochemistry is the study of phytochemicals, which are chemicals derived from plants.
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Pierre Curie
Pierre Curie (15 May 1859 – 19 April 1906) was a French physicist, a pioneer in crystallography, magnetism, piezoelectricity and radioactivity.
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Plasma (physics)
Plasma (Henry George Liddell, Robert Scott, A Greek English Lexicon, on Perseus) is one of the four fundamental states of matter, and was first described by chemist Irving Langmuir in the 1920s.
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Polyatomic ion
A polyatomic ion, also known as a molecular ion, is a charged chemical species (ion) composed of two or more atoms covalently bonded or of a metal complex that can be considered to be acting as a single unit.
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Polymer
A polymer (Greek poly-, "many" + -mer, "part") is a large molecule, or macromolecule, composed of many repeated subunits.
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Polymer chemistry
Polymer chemistry is a chemistry subdiscipline that deals with the structures, chemical synthesis and properties of polymers, primarily synthetic polymers such as plastics and elastomers.
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Pressure
Pressure (symbol: p or P) is the force applied perpendicular to the surface of an object per unit area over which that force is distributed.
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Primo Levi
Primo Michele Levi (31 July 1919 – 11 April 1987) was an Italian Jewish chemist, writer, and Holocaust survivor.
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Proton
| magnetic_moment.
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Quantization (physics)
In physics, quantization is the process of transition from a classical understanding of physical phenomena to a newer understanding known as quantum mechanics.
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Quantum
In physics, a quantum (plural: quanta) is the minimum amount of any physical entity (physical property) involved in an interaction.
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Quantum chemistry
Quantum chemistry is a branch of chemistry whose primary focus is the application of quantum mechanics in physical models and experiments of chemical systems.
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Quantum mechanics
Quantum mechanics (QM; also known as quantum physics, quantum theory, the wave mechanical model, or matrix mechanics), including quantum field theory, is a fundamental theory in physics which describes nature at the smallest scales of energy levels of atoms and subatomic particles.
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Radical (chemistry)
In chemistry, a radical (more precisely, a free radical) is an atom, molecule, or ion that has an unpaired valence electron.
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Radioactive decay
Radioactive decay (also known as nuclear decay or radioactivity) is the process by which an unstable atomic nucleus loses energy (in terms of mass in its rest frame) by emitting radiation, such as an alpha particle, beta particle with neutrino or only a neutrino in the case of electron capture, gamma ray, or electron in the case of internal conversion.
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Radiochemistry
Radiochemistry is the chemistry of radioactive materials, where radioactive isotopes of elements are used to study the properties and chemical reactions of non-radioactive isotopes (often within radiochemistry the absence of radioactivity leads to a substance being described as being inactive as the isotopes are stable).
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Radon
Radon is a chemical element with symbol Rn and atomic number 86.
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Raoult's law
Raoult's law (law) is a law of thermodynamics established by French chemist François-Marie Raoult in 1887.
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Raymond Chang (chemist)
Raymond Chang (1939-April 10, 2017) was an emeritus professor at Williams College in the Department of Chemistry and a textbook author.
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Reaction intermediate
A reaction intermediate or an intermediate is a molecular entity that is formed from the reactants (or preceding intermediates) and reacts further to give the directly observed products of a chemical reaction.
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Reaction mechanism
In chemistry, a reaction mechanism is the step by step sequence of elementary reactions by which overall chemical change occurs.
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Rearrangement reaction
A rearrangement reaction is a broad class of organic reactions where the carbon skeleton of a molecule is rearranged to give a structural isomer of the original molecule.
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Redox
Redox (short for reduction–oxidation reaction) (pronunciation: or) is a chemical reaction in which the oxidation states of atoms are changed.
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Reducing agent
A reducing agent (also called a reductant or reducer) is an element (such as calcium) or compound that loses (or "donates") an electron to another chemical species in a redox chemical reaction.
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Refractive index
In optics, the refractive index or index of refraction of a material is a dimensionless number that describes how light propagates through that medium.
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Renaissance
The Renaissance is a period in European history, covering the span between the 14th and 17th centuries.
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Robert Boyle
Robert Boyle (25 January 1627 – 31 December 1691) was an Anglo-Irish natural philosopher, chemist, physicist, and inventor.
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Robert Briffault
Robert Stephen Briffault (1874 – 11 December 1948) was a French surgeon who found fame as a social anthropologist and later in life as a novelist.
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Robert Hooke
Robert Hooke FRS (– 3 March 1703) was an English natural philosopher, architect and polymath.
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Royal Australian Chemical Institute
The Royal Australian Chemical Institute (RACI) is both the qualifying body in Australia for professional chemists and a learned society promoting the science and practice of chemistry in all its branches.
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Royal Netherlands Chemical Society
The Royal Netherlands Chemical Society (In Dutch: Koninklijke Nederlandse Chemische Vereniging, abbreviated: KNCV) is the professional association for chemists and chemical engineers in the Netherlands.
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Royal Society of Chemistry
The Royal Society of Chemistry (RSC) is a learned society (professional association) in the United Kingdom with the goal of "advancing the chemical sciences".
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Salt
Salt, table salt or common salt is a mineral composed primarily of sodium chloride (NaCl), a chemical compound belonging to the larger class of salts; salt in its natural form as a crystalline mineral is known as rock salt or halite.
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Salt (chemistry)
In chemistry, a salt is an ionic compound that can be formed by the neutralization reaction of an acid and a base.
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Scientific method
Scientific method is an empirical method of knowledge acquisition, which has characterized the development of natural science since at least the 17th century, involving careful observation, which includes rigorous skepticism about what one observes, given that cognitive assumptions about how the world works influence how one interprets a percept; formulating hypotheses, via induction, based on such observations; experimental testing and measurement of deductions drawn from the hypotheses; and refinement (or elimination) of the hypotheses based on the experimental findings.
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Scientific Revolution
The Scientific Revolution was a series of events that marked the emergence of modern science during the early modern period, when developments in mathematics, physics, astronomy, biology (including human anatomy) and chemistry transformed the views of society about nature.
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Silicate minerals
Silicate minerals are rock-forming minerals with predominantly silicate anions.
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Silicon dioxide
Silicon dioxide, also known as silica (from the Latin silex), is an oxide of silicon with the chemical formula, most commonly found in nature as quartz and in various living organisms.
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Soap
Soap is the term for a salt of a fatty acid or for a variety of cleansing and lubricating products produced from such a substance.
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Society of Chemical Industry
The Society of Chemical Industry (SCI) is a learned society set up in 1881 "to further the application of chemistry and related sciences for the public benefit".
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Sodium
Sodium is a chemical element with symbol Na (from Latin natrium) and atomic number 11.
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Sodium bicarbonate
Sodium bicarbonate (IUPAC name: sodium hydrogen carbonate), commonly known as baking soda, is a chemical compound with the formula NaHCO3.
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Sodium chloride
Sodium chloride, also known as salt, is an ionic compound with the chemical formula NaCl, representing a 1:1 ratio of sodium and chloride ions.
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Solid
Solid is one of the four fundamental states of matter (the others being liquid, gas, and plasma).
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Solid-state chemistry
Solid-state chemistry, also sometimes referred to as materials chemistry, is the study of the synthesis, structure, and properties of solid phase materials, particularly, but not necessarily exclusively of, non-molecular solids.
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Solution
In chemistry, a solution is a special type of homogeneous mixture composed of two or more substances.
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Sonochemistry
In chemistry, the study of sonochemistry is concerned with understanding the effect of ultrasound in forming acoustic cavitation in liquids, resulting in the initiation or enhancement of the chemical activity in the solution.
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Special relativity
In physics, special relativity (SR, also known as the special theory of relativity or STR) is the generally accepted and experimentally well-confirmed physical theory regarding the relationship between space and time.
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Spectral line
A spectral line is a dark or bright line in an otherwise uniform and continuous spectrum, resulting from emission or absorption of light in a narrow frequency range, compared with the nearby frequencies.
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Spectroscopy
Spectroscopy is the study of the interaction between matter and electromagnetic radiation.
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State of matter
In physics, a state of matter is one of the distinct forms in which matter can exist.
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Statistical mechanics
Statistical mechanics is one of the pillars of modern physics.
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Stepwise reaction
A stepwise reaction is a chemical reaction with one or more reaction intermediates and involving at least two consecutive elementary reactions.
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Structure
Structure is an arrangement and organization of interrelated elements in a material object or system, or the object or system so organized.
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Sucrose
Sucrose is common table sugar.
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Sulfur
Sulfur or sulphur is a chemical element with symbol S and atomic number 16.
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Supercritical fluid
A supercritical fluid (SCF) is any substance at a temperature and pressure above its critical point, where distinct liquid and gas phases do not exist.
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Supramolecular chemistry
file:Supramolecular Assembly Lehn.jpg |Self-Assembly of a Circular Double Helicate Cucurbituril gyroscope AngewChemIntEd 2002 v41 p275 hires.png|Host-guest complex within another host (cucurbit10uril) Rotaxane Crystal Structure EurJOrgChem page2565 year1998.png| Category:Chemistry.
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Surface science
Surface science is the study of physical and chemical phenomena that occur at the interface of two phases, including solid–liquid interfaces, solid–gas interfaces, solid–vacuum interfaces, and liquid–gas interfaces.
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Svante Arrhenius
Svante August Arrhenius (19 February 1859 – 2 October 1927) was a Nobel-Prize winning Swedish scientist, originally a physicist, but often referred to as a chemist, and one of the founders of the science of physical chemistry.
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Table of nuclides
A table of nuclides or chart of nuclides is a two-dimensional graph in which one axis represents the number of neutrons and the other represents the number of protons in an atomic nucleus.
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Temperature
Temperature is a physical quantity expressing hot and cold.
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The Canadian Encyclopedia
The Canadian Encyclopedia (abbreviated as TCE) is a source of information on Canada published by Historica Canada of Toronto.
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The central science
Chemistry is often called the central science because of its role in connecting the physical sciences, which include chemistry, with the life sciences and applied sciences such as medicine and engineering.
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The Independent
The Independent is a British online newspaper.
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The Sceptical Chymist
The Sceptical Chymist: or Chymico-Physical Doubts & Paradoxes is the title of a book by Robert Boyle, published in London in 1661.
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Theoretical chemistry
Theoretical chemistry is a branch of chemistry, which develops theoretical generalizations that are part of the theoretical arsenal of modern chemistry, for example, the concept of chemical bonding, chemical reaction, valence, the surface of potential energy, molecular orbitals, orbital interactions, molecule activation etc.
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Thermochemistry
Thermochemistry is the study of the heat energy associated with chemical reactions and/or physical transformations.
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Thermodynamic free energy
The thermodynamic free energy is the amount of work that a thermodynamic system can perform.
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Thermodynamics
Thermodynamics is the branch of physics concerned with heat and temperature and their relation to energy and work.
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Tin
Tin is a chemical element with the symbol Sn (from stannum) and atomic number 50.
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Triple point
In thermodynamics, the triple point of a substance is the temperature and pressure at which the three phases (gas, liquid, and solid) of that substance coexist in thermodynamic equilibrium.
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Ultrasound
Ultrasound is sound waves with frequencies higher than the upper audible limit of human hearing.
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United States dollar
The United States dollar (sign: $; code: USD; also abbreviated US$ and referred to as the dollar, U.S. dollar, or American dollar) is the official currency of the United States and its insular territories per the United States Constitution since 1792.
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University of Cambridge
The University of Cambridge (informally Cambridge University)The corporate title of the university is The Chancellor, Masters, and Scholars of the University of Cambridge.
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University of Manchester
The University of Manchester is a public research university in Manchester, England, formed in 2004 by the merger of the University of Manchester Institute of Science and Technology and the Victoria University of Manchester.
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University of Sheffield
The University of Sheffield (informally Sheffield University) is a public research university in Sheffield, South Yorkshire, England.
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Urea
Urea, also known as carbamide, is an organic compound with chemical formula CO(NH2)2.
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Valence bond theory
In chemistry, valence bond (VB) theory is one of two basic theories, along with molecular orbital (MO) theory, that were developed to use the methods of quantum mechanics to explain chemical bonding.
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Valence electron
In chemistry, a valence electron is an outer shell electron that is associated with an atom, and that can participate in the formation of a chemical bond if the outer shell is not closed; in a single covalent bond, both atoms in the bond contribute one valence electron in order to form a shared pair.
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Van der Waals force
In molecular physics, the van der Waals forces, named after Dutch scientist Johannes Diderik van der Waals, are distance-dependent interactions between atoms or molecules.
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Voltaic pile
The voltaic pile was the first electrical battery that could continuously provide an electric current to a circuit.
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Volume
Volume is the quantity of three-dimensional space enclosed by a closed surface, for example, the space that a substance (solid, liquid, gas, or plasma) or shape occupies or contains.
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VSEPR theory
Valence shell electron pair repulsion (VSEPR) theory is a model used in chemistry to predict the geometry of individual molecules from the number of electron pairs surrounding their central atoms.
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Water (classical element)
Water is one of the elements in ancient Greek philosophy, in the Asian Indian system Panchamahabhuta, and in the Chinese cosmological and physiological system Wu Xing.
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William Prout
William Prout FRS (15 January 1785 – 9 April 1850) was an English chemist, physician, and natural theologian.
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William Ramsay
Sir William Ramsay (2 October 1852 – 23 July 1916) was a Scottish chemist who discovered the noble gases and received the Nobel Prize in Chemistry in 1904 "in recognition of his services in the discovery of the inert gaseous elements in air" (along with his collaborator, John William Strutt, 3rd Baron Rayleigh, who received the Nobel Prize in Physics that same year for their discovery of argon).
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Woodward–Hoffmann rules
The Woodward–Hoffmann rules (or the pericyclic selection rules), devised by Robert Burns Woodward and Roald Hoffmann, are a set of rules used to rationalize or predict certain aspects of the stereochemical outcome and activation energy of pericyclic reactions, an important class of reactions in organic chemistry.
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World Association of Theoretical and Computational Chemists
The World Association of Theoretical and Computational Chemists (WATOC) is a scholarly association founded in 1982 "in order to encourage the development and application of theoretical methods" in chemistry, particularly quantum chemistry and computational chemistry.
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World War II
World War II (often abbreviated to WWII or WW2), also known as the Second World War, was a global war that lasted from 1939 to 1945, although conflicts reflecting the ideological clash between what would become the Allied and Axis blocs began earlier.
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Xenon
Xenon is a chemical element with symbol Xe and atomic number 54.
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Zosimos of Panopolis
Zosimos of Panopolis (Ζώσιμος ὁ Πανοπολίτης; also known by the Latin name Zosimus Alchemista, i.e. "Zosimus the Alchemist") was an Egyptian alchemist and Gnostic mystic who lived at the end of the 3rd and beginning of the 4th century AD.
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References
[1] https://en.wikipedia.org/wiki/Chemistry