Question detail
What does the law of conservation of mass state?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Chemical measurements, conservation of mass and the quantitative interpretation of chemical equations
Question
- A. Mass can be created or destroyed in a reaction.
- B. No atoms are lost or made during a chemical reaction.
- C. The mass of products is always greater than the mass of reactants.
- D. Mass is only conserved in closed systems.
Answer
No atoms are lost or made during a chemical reaction.
Explanation
The law of conservation of mass states that during a chemical reaction, the total mass remains constant as no atoms are lost or created.
Common mistake
Misunderstanding Atom Conservation
Students often think that atoms can be created or destroyed during a chemical reaction.
Emphasize that the law of conservation of mass states that no atoms are lost or made; they are simply rearranged.
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