Question

why+does+evaporation+cool+a+liquid?

Answer 1

Answer:

During evaporation the liquid molecules covert in vapours ( gaseous form )

and as we know gases molecules have greater energy than that of liquid, thus in order to covert into gaseous form the energy must either be supplied (as in boiling of a liquid) or the molecules would by themselves draw the energy from their surrounding matter, which is in the form of heat thus the evaporating molecules lower the temperature of its surrounding by drawing their heat energy.

Answer 2

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• The process of changing liquid into gas both below and at the boiling temperature is called Evaporation. Evaporation gain heat from the surrounding as a result there is a loss of heat in the surrounding the cooling process start and the surface become cool. This is the reason why evaporation produce cooling.