Question

State the distinction made by Avogadro between atoms and molecules.

Answer 1

Atoms	Molecules
An atom is the smallest particle of an element that takes part in a chemical reaction.	A molecule is the smallest particle of an element or compound that can exist independently and retains its chemical properties.
Atoms may not always exist independently.	Molecules can exist independently.
Atoms combine together to form molecules.	Molecules may consist of one or more atoms.