| Intermolecular forces | Intramolecular forces |
| Intermolecular forces are the forces present between atoms of two different molecules | Intramolecular forces are the forces present between the atoms of the same molecule. |
| Forces between two molecules | Forces within a molecule |
| Weaker forces | Stronger forces |
| In these forces, molecules are suspended and gripped in a substance. | In these forces, atoms are gripped in a molecule. |
| Physical parameters such as melting points, boiling points and physical states such as solid, liquid or gas are determined by such forces. | Chemical parameters such as the reactivity, the flammability or susceptibility to corrosion etc of a substance are determined by such forces. |
| These forces are classified into: Ion dipole forces, Ion induced dipole forces, Dipole-induced dipole forces, dipole-dipole forces including Hydrogen bonding and London dispersion forces. |
These forces are classified into:
Ionic Bond, Covalent Bond and Metallic Bond. |
| These are sometimes named as nonbonding forces. | These are sometimes named as bonding forces. |
| Persist for shorter life span of molecule | Persist for longer life span of molecule |
| Physical changes can affect such forces. | Physical changes cannot affect such forces usually. |
| Liable to bulk properties of matter | Liable to stabilize the molecule |
| Intermolecular bond distance can be longer | Intramolecular bond length is shorter. |
