+A **chemical species** refers to a collection of identical [molecules](/wiki/molecule), atoms, or ions, all sharing the same distinct composition and properties. It represents any identifiable group of such entities that functions as a single, discrete unit in chemical processes, such as an [ion](/wiki/ion) or a radical.
+## See also
+- [Atom](/wiki/atom)
+- [Compound](/wiki/compound)
+- [Element](/wiki/element)
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