Question

_________ is neither created nor destroyed during a chemical reaction.

Answer 1

• In a balanced chemical reaction, the number of atoms of each element on the left-hand side is equal to the number of atoms present on the right-hand side.
• This is in accordance with the Law of Conservation of mass which states that mass (matter) can neither be created nor destroyed in a chemical reaction’.
• So, the total mass of all the elements present in the products of a chemical reaction should be equal to the total mass of all the elements present in the reactants.

Hence, mass is neither created nor destroyed during a chemical reaction.