Students will complete a set of 30 review questions and calculations on the gas laws and the behavior of gases. Includes Boyle's law, Charles's law, the Combined gas law, the ideal gas law, and more. Each correct answer will lead the student to a code for coloring a section of the hidden picture grid. As students progress through the review questions, the picture will slowly be revealed. Includes student worksheets with review questions, two hidden picture grids, complete answer key, and a t