Question detail
Explain why the mass of the products in a chemical reaction is equal to the mass of the reactants.
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 why the mass of the products in a chemical reaction is equal to the mass of the reactants.
Answer
The mass of the products equals the mass of the reactants because of the law of conservation of mass, which states that no atoms are lost or created during a chemical reaction. Therefore, the total mass remains constant throughout the reaction.
Explanation
This question tests the student's understanding of the law of conservation of mass and its application to chemical reactions. A strong answer clearly connects the concept to the idea that atoms are neither lost nor gained, ensuring the mass remains unchanged.
Common mistake
Mass Misunderstanding
Students often think that the mass of products can differ from the mass of reactants in a chemical reaction.
Emphasize that according to the law of conservation of mass, the total mass of reactants must equal the total mass of products in a closed system.
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