Question detail
Case 16 answer-sense. A student reviews the final answer. Which check best catches an exam error? Focus on Rearrange atom-economy relationships in Atom economy, not on a neighbouring Unit 4.3 idea.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Yield and atom economy of chemical reactions (chemistry only)
Question
- A. Case 16 answer-sense: Check that the answer size, unit, and chemical context all match for Rearrange atom-economy relationships
- B. Case 16 answer-sense: Accept the answer if it has many decimal places (Atom economy)
- C. Case 16 answer-sense: Choose the answer with the biggest number because it looks more complete (Rearrange atom-economy relationships)
- D. Case 16 answer-sense: Drop the unit if the working contains a formula (Yield and atom economy of chemical reactions (chemistry only))
Answer
The correct option is Case 16 answer-sense: Check that the answer size, unit, and chemical context all match for Rearrange atom-economy relationships.
Explanation
The correct option is Case 16 answer-sense: Check that the answer size, unit, and chemical context all match for Rearrange atom-economy relationships. It supports the approved learning objective by keeping the method tied to Rearrange atom-economy relationships in Atom economy. The other options are incorrect because they either use the wrong quantitative relationship, lose the required unit, confuse coefficients with subscripts, or report an answer without a complete worked method.
Common mistake
Common Mistake in Rearranging Atom Economy
Students often confuse the formula for atom economy with that of percentage yield, leading to incorrect rearrangements.
Review the specific formula for atom economy and practice rearranging it separately from percentage yield to reinforce understanding.
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