Question

What physical changes occur to water as it vaporizes?

Answer 1

Does it not go from a condensed phase to a gaseous phase?

Explanation:

The which we can represent by the equilibrium..

`H_2O(l) rightleftharpoonsH_2O(g)`

Note that at ALL temperatures both WATER and ICE express a vapour pressure, the which for water we call it the
`"saturated vapour pressure"`, a function of temperature. `P_"SVP"-=23.8*mm*Hg` at `298*K`. What is `P_"SVP"` at `373.15*K`?

And of course as water vaporizes it expresses a much GREATER volume.