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Topic Content:
- The Concept of Atoms, Molecules, and Ions
Matter is made up of atoms, molecules, and ions.
Atom:
An atom is the smallest particle of an element which can take part in a chemical reaction. Atom is considered to be the basic unit of simple substances or elements.
Molecule:
A molecule is the smallest particle of a substance that can normally exist separately and still retain the chemical properties of that substance.
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