Answer to Question #304577 in General Chemistry for Mark

Question

property of water that explains why There is a large drop in temperature during evaporation.

Answer 1

Evaporative Cooling: As water evaporates off the surface of an object, the faster moving molecules, with more kinetic energy, escape as a gas, while the lower energy molecules, with less kinetic energy, remain as liquid. This lowers the temperature on the surface from which the liquid is evaporating.