fog rising off a river wood burning in a fireplace ice cream melting in the sunshine grinding peppercorn into pepper flakes
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which event is an example of a chemical change?
Possibilities:
- fog rising off a river
- wood burning in a fireplace
- ice cream melting in the sunshine
- grinding peppercorn into pepper flakes

wood burning in a fireplace