The Combined Gas Law follows from Boyle's Law and Charles' Law. This Powerpoint presentation examines the work of Boyle and Charles. It explains what happens to the volume of a gas at constant temperature as pressure changes (Boyle's Law), and what happens to the volume of a gas at constant pressure as temperature changes (Charles' Law). The presentation explains how these two relationships work together to give the combined gas law. There is a sample combined gas law problem.
Free worksheets fro this topic are available on my website at http://www.evanschemistrycorner.com.