Which statement best describes the Law of Conservation of Mass?

  1. The mass of an object on the moon is equal to the mass of that object on Earth.
  2. The mass of the products is equal to the mass of the reactants.
  3. Evidence of a chemical reaction is a change in mass.
  4. Mass can only be created, not destroyed.

📝 Detailed explanation

Mass is neither created nor destroyed during ordinary chemical reactions.
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