Question

what type of change occurs when a substance becomes a new and different substance?
both a chemical and a physical change
neither a chemical nor physical change
a chemical change
a physical change

Explanation:

In a chemical change, the chemical composition of a substance is altered, resulting in a new substance. Physical changes only affect physical properties like state, shape, etc., without forming a new substance. So when a new substance is formed, it is a chemical change.

Answer:

C. A chemical change