The substance gets larger. The substance changes phases. The substance changes shape. The substance forms a new substance.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which of these must occur when a substance goes through a chemical change?
Possibilities:
- The substance gets larger.
- The substance changes phases.
- The substance changes shape.
- The substance forms a new substance.

The substance forms a new substance.