Physics
Distinguish between the three states of matter — solid, liquid and gas on the basis of their molecular models.
Matter
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Answer
| S. No. | Properties | Solid | Liquid | Gas |
|---|---|---|---|---|
| 1. | Mass | Definite | Definite | Definite |
| 2. | Shape | Definite | Acquires the shape of the container | Acquires the shape of the container |
| 3. | Volume | Definite | Definite | Indefinite, acquires the volume available |
| 4. | Compressibility | Not compressible | Negligibly compressible | Highly compressible |
| 5. | Fluidity | Not possible | Can flow | Can flow |
| 6. | Rigidity | Highly rigid | Less rigid | Not rigid |
| 7. | Diffusion | Slow | Fast | Very fast |
| 8. | Number of free surfaces | Any number of free surfaces | Only one free surface | None |
| 9. | Packing of molecules | Very closely packed | Less closely packed | Least closely packed |
| 10. | Inter-molecular forces | Strongest | Slightly weaker than in solids | Negligible |
| 11. | Expansion on heating | Low | More than solids | More than liquids |
| 12. | Motion of constituent molecules | Only vibrate on either side of their mean positions | Move in all directions but within the boundary of the liquid | Move in a random manner in all space available |
| 13. | Pressure | Only at base downwards | At all points in all directions inside the boundary of the liquid | On the walls of the container |
| 14. | Viscosity | No | More viscous | Least viscous |
| 15. | Surface Tension | No | Due to cohesive force tends to occupy minimum surface area | No |
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