Which of the following is false about evaporation?
a. Evaporation is a type of vaporization.
b. The process of evaporation warms the surrounding air.
c. Evaporation is the change of a liquid sub-stance into a gas.
d. For evaporation to occur, heat energy is needed.
ANS: B
Vaporization is the change of state from liquid to gas. Vaporization requires heat energy. Ac-cording to the first law of thermodynamics, this heat energy must come from the surroundings. In one form of vaporization, called evaporation, heat is taken from the air surrounding the liquid, thereby cooling the air.
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