How does a balanced chemical equation show the conservation of mass?A.It shows that the mass of the products is greater than the mass of the reactants when a reaction increases the moles of substances.B.It shows that the number of each type of atom stays the same.C.It shows that the total number of moles of substances stays the same.D.It shows that the mass of the reactants is greater than the mass of the products when gases are produced by the reaction.
Question
How does a balanced chemical equation show the conservation of mass?A.It shows that the mass of the products is greater than the mass of the reactants when a reaction increases the moles of substances.B.It shows that the number of each type of atom stays the same.C.It shows that the total number of moles of substances stays the same.D.It shows that the mass of the reactants is greater than the mass of the products when gases are produced by the reaction.
Solution
The correct answer is B. A balanced chemical equation shows the conservation of mass by demonstrating that the number of each type of atom stays the same before and after the reaction. This is in line with the Law of Conservation of Mass, which states that matter cannot be created or destroyed in an isolated system. Therefore, the total mass of the reactants must equal the total mass of the products. The other options (A, C, and D) are incorrect because they either suggest that mass can change in a reaction (which contradicts the Law of Conservation of Mass) or they confuse the concept of moles with mass.
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