Question detail
What happens to thermosetting polymers when heated?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Using materials
Question
- A. They become soft and can be reshaped.
- B. They undergo a chemical change and harden.
- C. They dissolve in solvents.
- D. They emit toxic fumes.
Answer
The correct option is They undergo a chemical change and harden.. This answer is correct because it matches the approved learning objective to compare thermosetting and thermosoftening polymers experimentally or from data. (Chemistry only; WS 1.4, 3.5, 3.8) in the subtopic Ceramics, polymers and composites.
Explanation
The correct option is They undergo a chemical change and harden.. They undergo a chemical change and harden. is correct because it directly supports the approved learning objective to compare thermosetting and thermosoftening polymers experimentally or from data. (Chemistry only; WS 1.4, 3.5, 3.8). This belongs to the subtopic Ceramics, polymers and composites within Using materials, so the explanation must stay tied to that curriculum context. The other options are incorrect because they either do not answer this learning objective, use a vague statement, or move away from Ceramics, polymers and composites.
Common mistake
Confusing Polymer Types
Students often confuse thermosoftening and thermosetting polymers, thinking they behave the same when heated.
Remember that thermosoftening polymers can be reshaped when heated, while thermosetting polymers cannot be reshaped after they have set.
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