Ice melts into water. Bread burns in a toaster. A cake bakes in an oven. Two chemicals form a new substance.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: In which case does a physical change occur?
Possibilities:
- Ice melts into water.
- Bread burns in a toaster.
- A cake bakes in an oven.
- Two chemicals form a new substance.

Ice melts into water.