Question

In terms of intermolecular forces and heat, why does melting take less time than vaporization?

Answer 1

is it referring to water or any chemical?

Answer 2

Any.

Answer 3

hmm, well for vaporization the molecules need enough energy to overcome the intermolecular, attractive forces. Ice on the other hand does not need this energy to overcome attractive forces as they are still occur for liquids.

Answer 4

What do you think?

Answer 5

Well, how exactly do the molecules "overcome" the intermolecular forces? Do the bonds break?

Answer 6

It depends on the compound for "bonds". Water has H-bonds but helium has weak intermolecular forces and no "bonds" to break. As heat is added, it increases the kinetic energy (vibrational and such). This kinetic energy overpowers the intermolecular forces when it becomes a gas.