객관식
Which statement correctly describes the behavior of mass during a chemical reaction according to the Law of Conservation of Mass?
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2. Atoms & Elements
Law of Conservation of Mass
Multiple Choice
Which statement best describes the law of conservation of mass?
A
Matter cannot be created or destroyed in a chemical reaction.
B
Matter can spontaneously appear or disappear during physical changes.
C
Matter can be converted entirely into energy during a chemical reaction.
D
The mass of the products is always greater than the mass of the reactants.
검증된 단계별 안내1
Understand that the law of conservation of mass states a fundamental principle in chemistry regarding matter during chemical reactions.
Recall that this law asserts matter cannot be created or destroyed in an isolated system during a chemical reaction.
Recognize that this means the total mass of reactants before the reaction must equal the total mass of products after the reaction.
Eliminate options that suggest matter can appear or disappear, or that mass changes in a way that contradicts this principle.
Conclude that the correct description is: Matter cannot be created or destroyed in a chemical reaction.
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