This is a guided notes or review guide for gas laws. The worksheet set includes all of the standard gas laws (Boyle's law, Charles' Law, Gay-Lussac's, Combined Gas) as well as the Ideal Gas Law. There is a mix of concepts and math calculations with a clearly explained problem solving procedure attached to each problem. Each problem asks students to predict the trend (ex: based on the information in the problem, would you expect temperature to increase or decrease and why?). An answer key with all math problems worked out is included. I use this set as a review guide for my students. But it could be used for an entire unit/lesson set on the gas laws as well.