Question

what is meant by atoms and molecules?

Answer 1

the smallest particle of a compound that can exist in nature is called atom and A molecule is the smallest part of an element or compound that can exist by itself

Answer 2

atoms are basic units of matter and are made up of three particles proton neutron and electron these are composed of electrons and nucleus ....
Molecules -molecules are Smallest unit into which substance can be divided without changing its chemical nature