객관식
Which of the following best describes an implication of the law of conservation of mass for humans?
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2. Atoms & Elements
Law of Conservation of Mass
객관식
According to the Law of Conservation of Mass, if there is 8 g of a substance before a physical change, what will be the mass of the substance after the change?
A
0 g
B
8 g
C
16 g
D
4 g
검증된 단계별 안내1
Recall the Law of Conservation of Mass, which states that mass cannot be created or destroyed in a closed system during a physical or chemical change.
Identify that the problem involves a physical change, meaning the substance's mass should remain constant before and after the change.
Note the initial mass of the substance is given as 8 g before the physical change.
Apply the Law of Conservation of Mass: since no mass is lost or gained, the mass after the physical change must be equal to the initial mass.
Conclude that the mass of the substance after the physical change will be 8 g.
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