This is a set of cards that can be printed to help students practice chemical and physical changes of matter. Students love to play this game and you can make it more difficult as they learn. It starts with typical war where students lay down a change. Then, whoever correctly puts down the chemical or physical change card gets that card. The student with the most at the end wins. To make it harder, they must put down the chemical or physical change card AND the correct signs cards. The chemical or physical change cards can also be sorted to help students remember the signs of chemical and physical changes.