Comparison Chart:
| Basis For Comparison | Solid | Liquid | Gas |
|---|---|---|---|
| Meaning | Solid refers to a form of matter which has structural rigidity and has a firm shape which cannot be changed easily. | Liquid is a substance, that flows freely, having a definite volume but no permanent shape. | Gas refers to a state of matter, do not have any shape but conform to the shape of the container, completely, in which it is put in. |
| Shape and Volume | Fixed shape and volume. | No fixed shape but has volume. | Neither definite shape nor volume. |
| Energy | Lowest | Medium | Highest |
| Compressibility | Difficult | Nearly difficult | Easy |
| Arrangement of molecules | Regular and closely arranged. | Random and little sparsely arranged. | Random and more sparsely arranged. |
| Fluidity | Cannot flow | Flows from higher to lower level. | Flows in all directions. |
| Molecular motion | Negligible molecular motion | Brownian molecular motion | Free, constant and random molecular motion. |
| Intermolecular space | Very less | More | Large |
| Intermolecular attraction | Maximum | Medium | Minimum |
| Sound speed | Fastest | Faster than gas but slower than solid | Lowest among all |
| Storage | Don't need container, for storage. | Cannot be stored without container. | Needs closed container for storage. |
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