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mixture

(Encyclopedia)mixture, in chemistry, a physical combination of two or more pure substances (i.e., elements or compounds). A mixture is distinguished from a compound, which is formed by the chemical combination of t...

dividend

(Encyclopedia)dividend, that part of the net earnings of a corporation that is distributed to its stockholders. Dividend disbursements are based on a percentage of the par value of the stock or are a certain sum pe...

electromotive series

(Encyclopedia)electromotive series, list of metals whose order indicates the relative tendency to be oxidized, or to give up electrons (see oxidation and reduction); the list also includes the gas hydrogen. The ele...

sewerage

(Encyclopedia)sewerage, system for the removal and disposal of chiefly liquid wastes and of rainwater, which are collectively called sewage. The average person in the industrialized world produces between 60 and 14...

bead test

(Encyclopedia)bead test, test used in the identification of certain metals. Some metallic ions that cannot be identified by a flame test are identified by a bead test. The test can also be used to confirm the resul...

chromatography

(Encyclopedia)chromatography krōˌmətŏgˈrəfē [key], resolution of a chemical mixture into its component compounds by passing it through a system that retards each compound to a varying degree; a system capabl...

Ba'ath party

(Encyclopedia)Ba'ath party bäˈäth [key], Arab political party, in Syria and in Iraq. Founded in Damascus in 1941 with an ideology of secularism, socialism, and pan-Arab unionism, it was reformed with the name Ba...

Adams, Henry

(Encyclopedia)Adams, Henry, 1838–1918, American writer and historian, b. Boston; son of Charles Francis Adams (1807–86). He was secretary (1861–68) to his father, then U.S. minister to Great Britain. Upon his...

precipitation, in chemistry

(Encyclopedia)precipitation, in chemistry, a process in which a solid is separated from a suspension, sol, or solution. In a suspension such as sand in water the solid spontaneously precipitates (settles out) on st...

hyperinsulinism

(Encyclopedia)hyperinsulinism, presence in the system of an above-normal amount of insulin, the substance secreted by the pancreas and needed by the body to utilize sugar. An increased amount of insulin in the body...