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ATOM
Definition(s) for ATOM
1) The smallest particle of an element.
2) The smallest possible unit of matter that still maintains an element's identity during chemical reactions. Atoms contain one or more protons and neutrons (except hydrogen (H), which normally contains no neutrons) in a nucleus around which one or more electrons revolve.
3) The smallest amount of an element; a nucleus surrounded by electrons.
Related Terms & Definitions to Atom
Here are some related terms and definitions we found for this term.