Explain evaporation in terms of kinetic energy of liquid molecules.


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1. Molecules in a liquid are moving about randomly. 

2. The average kinetic energy of the molecules decides the temperature of the liquid. 

3. However, all molecules do not move with the same speed. 

4. Some with higher kinetic energy may escape from the surface region by overcoming the interatomic forces. 

5. This process can take place at any temperature and is termed as evaporation.

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