Thermoplastic and Thermosetting Polymers (VCE SSCE Chemistry): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What happens to thermoplastic polymers when they are heated?
What happens to thermoplastic polymers when they are heated?
They become soft and pliable
What type of forces hold thermoplastic polymer chains together?
What type of forces hold thermoplastic polymer chains together?
Weak intermolecular forces
Why are thermoplastic polymers highly recyclable?
Why are thermoplastic polymers highly recyclable?
They can be remolded when heated
What allows thermoplastic chains to slide past one another when heated?
What allows thermoplastic chains to slide past one another when heated?
Kinetic energy overcomes weak forces
What type of structure do thermosetting polymers form?
What type of structure do thermosetting polymers form?
A three-dimensional network
What type of bonds are the cross-links in thermosetting polymers?
What type of bonds are the cross-links in thermosetting polymers?
Strong covalent bonds
What happens to thermosetting polymers at very high temperatures?
What happens to thermosetting polymers at very high temperatures?
They decompose or burn irreversibly
How do elastomers differ from thermosetting polymers in their cross-linking?
How do elastomers differ from thermosetting polymers in their cross-linking?
They have only occasional cross-links
What is the process called when sulfur forms cross-links in rubber?
What is the process called when sulfur forms cross-links in rubber?
Vulcanisation
Why are thermosetting polymers extremely difficult to recycle?
Why are thermosetting polymers extremely difficult to recycle?
They cannot be melted and remolded