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A '''chemical''' is a substance
used in or obtained through a chemical process. |+|
A '''chemical''' is a substance or
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Latest revision as of 16:18, 11 June 2008
A chemical is either an element or a compound of elements. A chemical substance is composed entirely of a set of one or more kinds of atoms, ions or isotopes.
In comparison, a mixture consists of more than one chemical. For example, a solution is one or more chemicals dissolved in liquid.
The study of chemicals is a physical science called chemistry.