Final answer:
Acid rain weathering a marble statue and cooking an egg both involve chemical reactions where new substances with different properties are formed.
Step-by-step explanation:
The commonality between acid rain weathering a marble statue and cooking an egg is that both involve a chemical reaction. With acid rain and marble, the sulfuric or nitric acids in the rain chemically react with the calcium carbonate in the marble to form new compounds, in a process known as stone weathering.
When cooking an egg, the heat causes the proteins to denature and create a new substance, hence a chemical change occurs. These are not simple physical changes where the substance's appearance changes but its molecular structure remains the same; in both cases, new substances with different properties are formed.
The two changes, acid rain weathering a marble statue and cooking an egg, have in common that they both involve chemical reactions.
Acid rain weathering a marble statue is a chemical change because the acid in the rain reacts with the marble, causing it to degrade and form new substances. Cooking an egg is also a chemical change because the heat causes the proteins in the egg to denature and form new substances.
Therefore answer is a) Both involve a chemical reaction.