Vapor pressure is the focus of this chemistry video. Sal explains that when molecules are "sticking together," a substance takes on a liquid or solid form. However, when kinetic energy increases, the molecules are forced apart, allowing...

A problem from a chemistry textbook is posed on the screen. Sal solves the problem, which attempts to calculate vapor pressure using the Ideal Gas Law. The rate of evaporation of water given a specific volume, temperature, and pressure...