Question

1. which of the following is an example of a physical change? *

• baking a cake
• iron rusting
• burning paper
• tearing paper

Explanation:

Physical changes do not change the chemical composition of a substance. Tearing paper only changes its physical form, not its chemical makeup. Baking a cake, iron rusting, and burning paper involve chemical reactions that change the chemical composition of the substances involved.

Answer:

tearing paper