Evaporation is a type of vaporization of a liquid, that occur only on the surface of a liquid. The other type of vaporization is boiling, that instead occurs on the entire mass of the liquid. Evaporation is a type of phase transition; it's the process by which molecules in a liquid state (for example water) spontaneously become gaseous (for example water vapor). Generally, evaporation can be seen by the gradual disappearance of a liquid from a substance when exposed to a significant volume of g… (More on Evaporates)