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sgstudent
#6
Feb4-13, 11:35 AM
P: 645
Quote Quote by AbsoluteZer0 View Post
A substance, water for example, doesn't need to be at 100C for evaporation to take place. 100C, for water at least, is the boiling point.



It doesn't mean that all the molecules in the substance have an equivalent level of energy. Temperature is the average kinetic energy in the molecules of a substance.
But don't some of those particles have to have enough energy to boil off such that they have the mcΔT+ml to evaporate away? So even if the average kinetic energy is the same, those particles with slightly higher kinetic energies would only have a limited amount of energy they can transfer to the other particles?