Question

question 9 (1 point) is this a chemical or a physical change? letting the cut apple sit out in the open air, causing it to turn brown over time. a physical change b chemical change

Explanation:

When a cut - apple sits out in the open air and turns brown, it is due to a chemical reaction called oxidation. Oxidation changes the chemical composition of the apple's flesh, forming new substances. Physical changes only affect the physical state or appearance without changing the chemical makeup. Since the browning of the apple involves a change in its chemical composition, it is a chemical change.

Answer:

B. Chemical change