Question detail
Explain how a balanced chemical equation supports the law of conservation of mass.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Chemical measurements, conservation of mass and the quantitative interpretation of chemical equations
Question
Explain how a balanced chemical equation supports the law of conservation of mass.
Answer
A balanced chemical equation shows that the number of atoms of each element is the same on both sides of the equation. This indicates that no atoms are lost or created during the reaction, thus supporting the law of conservation of mass.
Explanation
This question tests the understanding of the relationship between balanced equations and the conservation of mass. A strong answer demonstrates knowledge of how balancing reflects the principle that matter is neither created nor destroyed in a chemical reaction.
Common mistake
Misunderstanding Mass Conservation
Students often believe that mass can change during a chemical reaction, especially when gases are involved.
Emphasize that the law of conservation of mass states that no atoms are lost or made, so the total mass of reactants equals the total mass of products, regardless of the state of matter. Keep the correction anchored to Conservation of mass and balanced chemical equations; check formula, substitution, calculation, final answer, and unit where relevant.
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