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dissociation
(Encyclopedia)dissociation, in chemistry, separation of a substance into atoms or ions. Thermal dissociation occurs at high temperatures. For example, hydrogen molecules (H2) dissociate into atoms (H) at very high ...van't Hoff, Jacobus Hendricus
(Encyclopedia)van't Hoff, Jacobus Hendricus yäkōˈbəs hĕndrēˈkəs vänt hôf [key], 1852–1911, Dutch physical chemist. He taught at the universities of Amsterdam (1878–96) and Berlin (from 1896). For his ...Prince, Morton
(Encyclopedia)Prince, Morton, 1854–1929, American physician, b. Boston, M.D. Harvard, 1879. He specialized in neurology and abnormal psychology as a physician in Boston and as a teacher at Tufts (1902–12) and H...Arrhenius, Svante August
(Encyclopedia)Arrhenius, Svante August sfänˈtə, ärāˈnēəs [key], 1859–1927, Swedish chemist. He was a professor of physics in Stockholm in 1895 and became director of the Nobel Institute for Physical Chemi...sulfonic acid
(Encyclopedia)sulfonic acid səlfŏnˈĭk [key], organic compound containing the functional group RSO2OH, which consists of a sulfur atom, S, bonded to a carbon atom that may be part of a large aliphatic or aromati...titration
(Encyclopedia)titration tītrāˈshən [key], gradual addition of an acidic solution to a basic solution or vice versa (see acids and bases); titrations are used to determine the concentration of acids or bases in ...chlorofluorocarbons
(Encyclopedia)chlorofluorocarbons klōrˌəflo͝orˈəkärˌbənz, klôrˌ– [key] (CFCs), organic compounds that contain carbon, chlorine, and fluorine atoms. CFCs are highly effective refrigerants that were deve...sodium hydroxide
(Encyclopedia)sodium hydroxide, chemical compound, NaOH, a white crystalline substance that readily absorbs carbon dioxide and moisture from the air. It is very soluble in water, alcohol, and glycerin. It is a caus...salt, chemical compound
(Encyclopedia)salt, chemical compound (other than water) formed by a chemical reaction between an acid and a base (see acids and bases). Salts are also prepared by methods other than neutralization. A metal can c...chemical equilibrium
(Encyclopedia)chemical equilibrium, state of balance in which two opposing reversible chemical reactions proceed at constant equal rates with no net change in the system. For example, when hydrogen gas, H2, and iod...Browse by Subject
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