Question

What do these two changes have in common?

- acid rain weathering a marble statue
- cooking an egg

Select all that apply.
A. Both are caused by cooling.
B. Both conserve mass.
C. Both are chemical changes
D. Both are changes of state.

Answer 1

Both acid rain weathering a marble statue and cooking an egg are examples of chemical changes.

Step-by-step explanation:

Both acid rain weathering a marble statue and cooking an egg are examples of chemical changes. Acid rain contains chemical compounds that react with the marble statue, causing it to degrade over time. Similarly, when an egg is cooked, the proteins in the egg undergo chemical changes, causing the egg to solidify and change its texture and taste.

Neither of these changes is caused by cooling, so option A is incorrect. While cooking an egg does not conserve mass (because some water evaporates), the chemical reaction itself does conserve the number and types of atoms involved, so option B is correct. Both acid rain weathering a marble statue and cooking an egg involve chemical reactions, but not changes of state, so option D is incorrect.

In conclusion, the correct options are:

• Both conserve mass
• Both are chemical changes