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Solids, liquids and gases

State Solid Liquid Gas
Packing of molecules Tightly packed Closely packed Loosely packed
Movement of molecules Can only vibrate and rotate in fixed positions Move randomly but not as mobile as gases Move randomly in all directions (faster than in liquids)
Physical properties Fixed shape and volume No definite shape but fixed volume No definite shape or volume.
Compressibility Hard to compress Hard to compress Compressible
Examples Tables, chairs, ice Milk, water, petrol Steam, air, helium