Question

what is atom and molecules​

Answer 1

Answer:

Atoms are defined as “the basic building blocks of matter”.

A molecule is an electrically neutral group of two or more atoms held together by chemical bonds. Molecules are distinguished from ions by their lack of electrical charge

Answer 2

Atom is the smallest unit into which matter can be divided without the release of electrically charged particles.

Molecule is a group of two or more atoms that form the smallest identifiable unit into which a pure substance can be divided and still retain the composition and chemical properties of that substance.

Hope it helps.