Question

What happens to the mass of substances during a chemical change?

Answer 1

when atoms interact and create new products, mass is conserved. This is because the new substances created are composed of atoms that were present in the reactants. The atoms from the reactants come apart, rearrange and re-bond in a different arrangement to form the products.

Step-by-step explanation:

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Answer 2

no particles are created or destroyed: the atoms are simply rearranged from the reactants to the products. The products may have different properties to the reactants. Mass is never lost or gained in chemical reactions. We say that mass is always conserved.