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Matter in Any State is Composed of Small Particles – Molecules, Atoms Or Ions. Differentiate the Terms Above in Italics. - Chemistry

Answer in Brief

Matter in any state is composed of small particles – molecules, atoms, or ions. Differentiate the terms above in Italics.

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Solution

Molecules: A molecule is the smallest particle of a substance that can normally exist separately and retain the characteristics of the substance, e.g. O2, H2, Cl2 are molecules.
Atoms: An atom is the smallest particle of an element that can take part in a reaction and is considered the basic unit of matter, e.g. O, H, Cl are atoms.
Ions: An ion is any atom or a group of atoms that has a resultant charge due to loss or gain of electrons, e.g. O2-, H1+, Cl1-– are ions.

Concept: Interconversion of States of Matter
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