Question

which of the following is an example of a physical change? freezing water rusting iron baking a cake digesting food

Explanation:

A physical change is a change in which the form or state of matter changes, but not its chemical composition. Freezing water is a phase - change from liquid to solid without altering the chemical identity of water (H₂O). Rusting iron is a chemical reaction (oxidation), baking a cake involves chemical reactions (e.g., between baking powder and other ingredients), and digesting food is a series of chemical processes.

Answer:

Freezing water