Question

define chemical change​

Answer 1

A chemical change occurs when a new substance is formed through a chemical reaction like when fruit ripens or rots. When something undergoes a "chemical reaction" and a new substance is formed as a result, we call this chemical change. ... The iron reacts with water and oxygen to create a new substance — rust.

Answer 2

Answer:

chemical change is a process where a substance undergoes a change in its chemical structure it is a permanent change and it is not reversible.