17:40

First law of thermodynamics / internal energy | Thermodynamics | Physics | Khan Academy

18:04

Vapor pressure | States of matter and intermolecular forces | Chemistry | Khan Academy

8:45

States of matter follow-up | States of matter and intermolecular forces | Chemistry | Khan Academy

12:36

Phase diagrams | States of matter and intermolecular forces | Chemistry | Khan Academy

14:49

Specific heat, heat of fusion and vaporization example | Chemistry | Khan Academy