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Chemistry | Definition, Topics, Types, History, & Facts | Britannica
Cooking, fermentation, glass making, and metallurgy are all chemical processes that date from the beginnings of civilization. Today, vinyl, Teflon, liquid crystals, semiconductors, and superconductors represent the fruits of chemical technology.
Chemical synthesis | Organic & Inorganic Reactions | Britannica
Chemical compounds are made up of atoms of different elements, joined together by chemical bonds. A chemical synthesis usually involves the breaking of existing bonds and the formation of new ones.
Chemical compound | Definition, Examples, & Types | Britannica
All the matter in the universe is composed of the atoms of more than 100 different chemical elements, which are found both in pure form and combined in chemical compounds.
Chemical element | Definition, Origins, Distribution, & Facts | Britannica
A chemical element is any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed. Learn more about the origins, distribution, and characteristics of chemical elements in this article.
Chemical reaction | Definition, Equations, Examples, & Types - Britannica
Substances are either chemical elements or compounds. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.
chemistry - Students | Britannica Kids | Homework Help
The tendency of an atom to combine is a chemical property of the atom, and it is controlled by electrical forces at the atomic level. Those forces forge the links, called chemical bonds, that hold two or more atoms together. The groups of atoms formed by chemical bonding are known as molecules.
Chemical bonding | Definition, Types, & Examples | Britannica
This article begins by describing the historical evolution of the current understanding of chemical bonding and then discusses how modern theories of the formation of chemical bonds have emerged and developed into a powerful description of the structure of matter.
Chemical Banking Corporation | Merger, Acquisition, Rebranding ...
The merged company became the Chemical Banking Corporation. In 1996 the firm, which was by then the second-largest bank in the United States, merged with another New York bank, The Chase Manhattan Corporation, to form what became the largest bank in the nation.
Cellular respiration | Definition, Equation, Cycle, Process, Reactants ...
Cellular respiration, the process by which organisms combine oxygen with foodstuff molecules, diverting the chemical energy in these substances into life-sustaining activities and discarding, as waste products, carbon dioxide and water.
Potassium | Definition, Properties, & Reactions | Britannica
Potassium, chemical element of the alkali metal group that is essential for life, is present in all soils, and is denoted by chemical symbol K.
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