Which is the best explanation of why the temperature of a liquid decreases when it…
PHYSICS · Single correct · CBSE · Physics · Thermal Properties of Matter · Thermal Properties of Matter
Problem
Which is the best explanation of why the temperature of a liquid decreases when it evaporates?
(1) The number of liquid molecules is decreasing.
(2) The mean kinetic energy of the liquid molecules is decreasing.
(3) The pressure above the liquid surface is increasing.
(4) The rate of evaporation is increasing.