Physical and chemical change quiz, 4th grade science game for children to practice both at home and in the classroom. It is an interactive activity in which players need to determine if some changes are physical or chemical processes e.g. rusting, burning, baking etc. Players will learn about some processes and determine what changes are taking place e.g. ice melting is a physcal change while rusting is a chemical change. This activity is in line with fourth grade science and feedback is instant as players take the challenge. Have fun and learn..