A molecule is composed of two or more kinds of atoms. That is, the atom is the base material and the molecules are groups of atoms.
The difference between atoms and molecules is that atoms has a nucleus that is surrounded by electrons and Molecules are atoms bonded together by single, double or triple the bond.
Atoms are the smallest units of elements, while molecules are composed of two or more atoms bonded together. Atoms maintain the properties of their respective elements, whereas molecules can exhibit different properties. A key difference is that individual atoms cannot combine to form compounds without forming molecules first.
;