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Questions and Answers
What are polymers?
What are polymers?
- Materials made of short, non-repeating chains of molecules
- Man-made materials that cannot change shape
- Materials that occur in nature
- Long chains of atoms bonded to each other (correct)
What distinguishes thermoplastic from other plastics?
What distinguishes thermoplastic from other plastics?
- They can be softened by heating (correct)
- They are naturally occurring
- They are not made of polymers
- They are rigid and cannot change shape
Why are many things made of plastics?
Why are many things made of plastics?
- They are naturally occurring
- They are cheaper than other materials
- They are biodegradable
- Making them to the right shape is easy (correct)
What is the primary characteristic of adhesives and sealants used in building construction?
What is the primary characteristic of adhesives and sealants used in building construction?
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What happens to plastics that can be shaped only when they are freshly made?
What happens to plastics that can be shaped only when they are freshly made?
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