객관식
Which of the following is true regarding the law of conservation of mass?
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2. Atoms & Elements
Law of Conservation of Mass
객관식
According to the Law of Conservation of Mass, what happens to the total mass of substances during a chemical reaction?
A
The total mass fluctuates randomly.
B
The total mass remains unchanged.
C
The total mass decreases.
D
The total mass increases.
검증된 단계별 안내1
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 to form new substances, but the total number of atoms remains the same.
Since the number of atoms and their masses remain constant, the total mass of all substances before and after the reaction must be equal.
Therefore, the total mass of substances involved in a chemical reaction remains unchanged throughout the process.
This principle explains why the correct answer is: The total mass remains unchanged.
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