Chemical
From Wikipedia, the free encyclopedia.

A chemical is a either a chemical element or a material with a defined composition of such elements: a chemical compound. The term is often used to refer to bulk material, rather than to individual microscopic or submicroscopic particles, e.g., "A chemical is a specific collection of atoms or molecules."

See also: chemistry, chemical industry, molecule.

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The original article can be found at: http://en.wikipedia.org/wiki/Chemical.
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