Asked by palaksophia | 6th Jun, 2009, 10:07: PM
Boiling occurs when vapour pressure of a liquid becomes equal to atmospheric pressure.
At boiling point the molecules which are lying in the bulk of the liquid also gain energy and start to move out from the bulk.
This is unlike evaporation in which only surface molecules leave the surface and form vapours. Hence boiling is a bulk phenomenon.
Answered by | 9th Jun, 2009, 07:02: PM
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