Chemical changes: A substance is chemically changed due to a chemical reaction, and forms a new substance and energy that is given off or absorbed.
Examples:
Paper burned
Souring milk
Baking a cake
Rusted iron
Physical change: Substance that doesn't change what the substance is.
Examples:
Paper cut in half
Water boiled
Molded bread
Ice melted into a liquid
HOPE THIS HELPS YOU! ^_^
