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Which statement best describes the Law of Conservation of Mass during a chemical change?
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2. Atoms & Elements
Law of Conservation of Mass
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The conservation of matter is an example of a scientific:
A
hypothesis
B
law
C
observation
D
theory
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Understand the definitions of the terms: a hypothesis is a testable prediction, a theory is a well-substantiated explanation, a law is a statement that describes a consistent natural phenomenon, and an observation is a direct measurement or noticing of an event.
Recognize that the conservation of matter states that matter cannot be created or destroyed in a closed system, which is a consistent and universally observed fact.
Since the conservation of matter describes a fundamental and consistent natural phenomenon without explaining why it happens, it fits the definition of a scientific law.
Differentiate this from a theory, which would provide an explanation for why matter is conserved, and from a hypothesis, which would be a tentative prediction to be tested.
Conclude that the conservation of matter is best classified as a scientific law because it summarizes a consistent pattern observed in nature.
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