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chemical warfare

(Encyclopedia)chemical warfare, employment in war of incendiaries, poison gases, and other chemical substances. Ancient armies attacking or defending fortified cities threw burning oil and fireballs. A primitive ty...

chemical industry

(Encyclopedia)chemical industry, the business of using chemical reactions to turn raw materials, such as coal, oil, and salt, into a variety of products. During the 19th and 20th cent. technological advances in the...

analysis, chemical

(Encyclopedia)analysis, chemical: see chemical analysis. ...

equation, chemical

(Encyclopedia)equation, chemical: see chemical equation. ...

equilibrium, chemical

(Encyclopedia)equilibrium, chemical: see chemical equilibrium. ...

bond, chemical

(Encyclopedia)bond, chemical: see chemical bond. ...

polymerase chain reaction

(Encyclopedia)polymerase chain reaction pŏlˈĭmərāsˌ [key] (PCR), laboratory process in which a particular DNA segment from a mixture of DNA chains is rapidly replicated, producing a large, readily analyzed sa...

chemical engineering

(Encyclopedia)chemical engineering: see engineering. ...

Chemical Ali

(Encyclopedia)Chemical Ali: see Majid, Ali Hassan al-. ...

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...