Question

How do the products and reactants of a chemical change compare?

The mass of the products is greater than the mass of the reactants because energy is taken in by the reaction.

The mass of the products equals the mass of the reactants because the same matter is present.

The mass of the products equals the mass of the reactants because there is no energy involved in the reaction.

The mass of the products is less than the mass of the reactants because energy is given off by the reaction.

Answer 1

Answer: The mass of the products equals the mass of the reactants because the same matter is present.

Explanation: using the law of conservation of mass which states that mass of the reactant is equal to the mass of the product

During a chemical reaction, the mass present is always the same as the mass after the reaction

Though energy is involved but the energy is the activation energy that lead to the chemical change

Answer 2

I think the correct answer among the choices listed above is the second option. The products and reactants of a chemical change compare by the statement that the mass of the products equals the mass of the reactants. This agrees to the law of conservation of mass.