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chemistry

(Encyclopedia)chemistry, branch of science concerned with the properties, composition, and structure of substances and the changes they undergo when they combine or react under specified conditions. Organic chemi...

Montana

(Encyclopedia)CE5 Montana mŏntănˈə [key], Rocky Mt. state in the NW United States. It is bounded by North Dakota and South Dakota (E), Wyoming (S), Idaho (W), and the Canadian provinces of British Columbia, ...

French art

(Encyclopedia)French art, the artistic production of the region that constitutes the historic nation of France. See also French architecture. The innovations of postimpressionism, combined with the influence of C...

scene design and stage lighting

(Encyclopedia)scene design and stage lighting, settings and illumination designed for theatrical productions. See also drama, Western; Asian drama; theater; directing; acting. Scene designers in the early 20th ce...

children's literature

(Encyclopedia)children's literature, writing whose primary audience is children. See also children's book illustration. The contributions and innovations of the 19th cent. continued into the 20th cent., achieving...

sculpture

(Encyclopedia)sculpture, art of producing in three dimensions representations of natural or imagined forms. It includes sculpture in the round, which can be viewed from any direction, as well as incised relief, in ...

Congo, Democratic Republic of the

(Encyclopedia)CE5 Congo, Democratic Republic of the, formerly Zaïre zīˈēr, zäērˈ [key], republic ...

element

(Encyclopedia)CE5 element, in chemistry, a substance that cannot be decomposed into simpler substances by chemical means. A substance such as a compound can be decomposed into its constituent elements by means o...

Washington, George

(Encyclopedia)Washington, George, 1732–99, 1st President of the United States (1789–97), commander in chief of the Continental army in the American Revolution, called the Father of His Country. The Univ. of V...

strategy and tactics

(Encyclopedia)strategy and tactics, in warfare, related terms referring, respectively, to large-scale and small-scale planning to achieve military success. Strategy may be defined as the general scheme of the condu...