Question

What must occur in order for a matter to change states? A: Heat must be added or removed B: A chemical change must occur C: Other substances must be added D: The temperature must change

Answer 1

Answer:a chemical change must occur to change states

Step-by-step explanation:

Chemical changes are irreversible, physical changes however dont affect the structure of the molecule of whatever it is

Answer 2

Hey!

Your answer is A: Heat must be added or removed

Step-by-step explanation:

For example...

To change water from a liquid to a solid, you have to change its molecular composition and change the bondages between the Hydrogen and Oxygen molecules...

This is only done when you add heat / remove through Vaporization / Condensation!

To change a substance's state is a REVERSIBLE process meaning you have to add or remove energy (heat) to change its state!