The melting of ice The grinding of salt crystals to powder The burning of wood The evaporation of water from a puddle
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which is an example of a chemical reaction?
Possibilities:
- The melting of ice
- The grinding of salt crystals to powder
- The burning of wood
- The evaporation of water from a puddle

The burning of wood