Question

which is not a physical change? cutting a pizza into equal slices. a chocolate bar melting. baking cupcakes. ice cubes melting back into liquid water

Explanation:

Physical changes do not change the chemical composition of a substance. Cutting a pizza, melting chocolate, and melting ice are physical changes. Baking cupcakes involves a chemical reaction (e.g., between baking powder and other ingredients) that changes the chemical composition of the substances used, so it is a chemical change, not a physical change.

Answer:

Baking cupcakes.