Question

there is a law that explains that matter cannot be created nor destroyed. what do we call this law? law of energy law of conservation of matter

Explanation:

The Law of Conservation of Matter states that matter cannot be created or destroyed in a chemical reaction. It only changes form. The "Law of Energy" is too general and not specific to the conservation of matter. So the correct answer is the Law of Conservation of Matter.

Answer:

Law of Conservation of Matter