Question

define evaporation how does it differ from boiling? How does evaporation cause cooling?

Answer 1

Evaporation is a free surface process. Boiling is an entire bulk process that gets triggered from the solid interfaces and phase change occurs at the free surfaces. For the phase change to happen, the escaping molecules gain energy from the bulk of the liquid. thereby causing a cooling effect.

Answer 2

Evaporation is a surface phenomenon; it takes place at all temperatures. Boiling is a bulk phenomenon. of vaporization from anything which it touches or is in contact with. Thus causes cooling.