Question detail
In the elmwood written-response scenario for Test for chlorine, explain how chlorine gas test supports this objective: Interpret bleaching of damp litmus paper as evidence that chlorine is present..
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Identification of common gases
Question
In the elmwood written-response scenario for Test for chlorine, explain how chlorine gas test supports this objective: Interpret bleaching of damp litmus paper as evidence that chlorine is present..
Answer
A high-scoring answer should explain interpret bleaching of damp litmus paper as evidence that chlorine is present. Use evidence before identification: name the relevant test or measurement, state the observation, and then connect the result to Test for chlorine.
Explanation
The important distinction is that chlorine gas must be identified from damp litmus paper; answers that swap in a different test or result do not match Test for chlorine. A complete answer should use the approved objective wording, include the relevant evidence, and avoid unsupported identification claims.
Common mistake
Confusing Chlorine Test with Other Tests
Students often confuse the test for chlorine with tests for hydrogen, oxygen, and carbon dioxide, leading to incorrect interpretations of results.
To fix this, students should focus on the specific observation of damp litmus paper bleaching, which is unique to chlorine, and practice distinguishing it from the other gas tests.
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