Phase Transition

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Vaporisation: evaporation and boiling

States Shape Volume Compress Particles
Solid Fixed Fixed Cannot - closely packed
- vibrate about fixed positions
Liquid No Fixed Fixed Cannot - less closely packed
- can move freely throughout the liquid
Gas No Fixed no Fixed Can - no arrangement
- move in straight lines in any direction
- freely, randomly		 
$$P\cdot V=nRT$$

$T$ = Temperature $P$ = Pressure $V$ = Volume