Question

The total number of atoms does not change in a chemical reaction. This is commonly

known as the Law of Conservation of ____ ?

1.Atoms

2.Matter

3.Physics

Answer 1

2. Matter

All chemical reactions are chemical changes. The Law of Conservation of Matter states that matter cannot be created or destroyed. In a physical change, substances can change form, but the total mass remains the same. In a chemical change, the total mass of the reactants always equals the total mass of the products.