Question detail
How do thermosetting polymers behave 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 melt and can be reshaped.
- B. They remain unchanged.
- C. They become soft and flexible.
- D. They harden and cannot be reshaped.
Answer
The correct option is They harden and cannot be reshaped.. This answer is correct because it matches the approved learning objective to distinguish thermosoftening polymers from thermosetting polymers in terms of behaviour when heated. (Chemistry only) in the subtopic Ceramics, polymers and composites.
Explanation
The correct option is They harden and cannot be reshaped.. They harden and cannot be reshaped. is correct because it directly supports the approved learning objective to distinguish thermosoftening polymers from thermosetting polymers in terms of behaviour when heated. (Chemistry only). 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 polymers with thermosetting polymers, thinking both behave the same way when heated.
Remember that thermosoftening polymers can be reshaped when heated, while thermosetting polymers do not change shape and become rigid upon heating.
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