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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 [[atom]]s, [[ion]]s or isotopes.
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 [[atom]]s, [[ion]]s or [[isotopes]].
In comparison, a mixture consists of more than one chemical. For example, a solution is one or more chemicals dissolved in liquid.
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]]''.
The study of chemicals is a [[physical science]] called ''[[Chemistry]]''.
[[Category:Chemistry]]
[[Category:Chemistry]]