Question

What are atoms and molecules I want very short answer

Answer 1

the smallest part of substance which cannot spilt in two parts is known as atoms.

a group of atom is known as molecules.
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Answer 2

Here is your answer. ..

ATOM...

Atoms are the fundamental and structural part
of a matter. They are the smallest unit of an element.

MOLECULE. ...

molecule is the smallest particle in a chemical element or compound that has the chemical properties of that element or compound. Molecules are made up of atomsthat are held together by chemical bonds.