Question

why does evaporation cool a liquid​

Answer 1

Explanation:

Only the molecules on the surface, having contact with the atmosphere evaporate. When those molecules evaporate, they take heat from their surrounding molecules, which are other molecules of the same liquid. Thus, making the liquid cool.

Hope I helped

Answer 2

Explanation:

Evaporation is mainly a surface phenomena in which molecules of a liquid escape into atmosphere as vapours by gaining energy (mainly in the form of heat) from rest of the liquid as well as surrounding environment, leaving the rest of liquid cooler.