Physics
Do all the molecules of a liquid take part in evaporation? If not, explain your answer.
Heat Energy
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Answer
No, all the molecules of a liquid do not take part in evaporation. Only the molecules on the surface of the liquid take part in evaporation.
In evaporation, some molecules near the surface of the liquid acquire sufficient kinetic energy by collisions with the other molecules, to reach the surface. These molecules absorb heat from the surroundings to escape out in space forming vapours of the liquid. Hence, only the molecules on the surface of the liquid take part in evaporation.
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