Which of the following statements about conservation of mass is true?

Question

Mass is conserved in physical changes, but not chemical changes.

• In a chemical reaction, the mass of the reactants is always greater than the mass of the products.

• In a chemical reaction, the mass of the products is always greater than the mass of the reactants.

• Mass is conserved in both physical and chemical changes.

Answer 1

• Mass is conserved in both physical and chemical changes.