Which of the following statements about conservation of mass is true?
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.
1 answer
• Mass is conserved in both physical and chemical changes.