A substance undergoes a change. Which of the following indicates that the change was a chemical change?

The substance froze

The substance changed size

The substanced changed shape

New molecules formed

Answer;

-New molecules formed

Explanation;

-Chemical changes are type of changes that occurs when substances combine to form a new substance. They occur as a result of chemical reaction. During a chemical reactions, the atoms within a substance are rearranged into different combinations.

-Examples of chemical changes include; rusting of iron, heating sugar to form caramel, baking a cake, digesting food among others.

New molecules would form.

the other three are examples of a physical change