| Liquids | Gases |
| Have definite volume but no definite shape | Have no definite shape or volume |
| Intermolecular force of attraction is weaker than that in solids | Intermolecular force of attraction is the weakest (almost negligible |
| Molecules are not as tightly packed as in solids and intermolecular space is more than that in solids. | Intermolecular space is the maximum and the molecules are far apart. |
| Molecules have no fixed position Can be compressed slightly | Molecules move around freely Can be easily compressed. |
| Are capable of flowing. | Can flow in all directions. |