Multiple Choice
Which statement best explains how balanced chemical equations demonstrate the law of conservation of mass?
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2. Atoms & Elements
Law of Conservation of Mass
Multiple Choice
According to the law of conservation of mass, which statement is correct during a chemical reaction?
A
The total mass of reactants equals the total mass of products.
B
Mass can be created or destroyed during a chemical reaction.
C
The total mass of reactants is always less than the total mass of products.
D
The mass of the products is always greater than the mass of the reactants.
Verified step by step guidance1
Understand the law of conservation of mass, which states that mass cannot be created or destroyed in a chemical reaction.
Recognize that during a chemical reaction, atoms are rearranged but the total number of atoms remains the same.
Therefore, the total mass of the reactants before the reaction must be equal to the total mass of the products after the reaction.
Evaluate the given statements and identify that the correct one aligns with the law of conservation of mass, stating that the total mass of reactants equals the total mass of products.
Conclude that statements suggesting mass can be created or destroyed, or that the mass of products is always greater or less than the reactants, contradict the law and are incorrect.
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