Question

(b) Two containers made of insulating material contain the same volume of water at room

temperature. The containers do not have lids. The volume of liquid in each container gradually
decreases.
(1) After a certain time, the temperature of the water has decreased to below room
temperature
Explain, in terms of molecules, why the temperature has decreased.
[2]

Answer 1

the volume of liquid decreased due to evaporation from the exposed free surface of water so molecules got evaporated .

evaporation occurs at room temperature.