Relating Properties, Uses, and Structure (HSC 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 appearance do crystalline regions in polymers typically have?
What appearance do crystalline regions in polymers typically have?
Opaque
Which property is characteristic of amorphous regions in polymers?
Which property is characteristic of amorphous regions in polymers?
Transparency
How does high branching affect polymer chain packing?
How does high branching affect polymer chain packing?
Prevents close packing
What effect do longer polymer chains have on melting point?
What effect do longer polymer chains have on melting point?
Higher melting points
Which polymer is the most rigid due to its large side groups?
Which polymer is the most rigid due to its large side groups?
Polystyrene
What happens to polymer properties with heavy cross-linking?
What happens to polymer properties with heavy cross-linking?
Becomes highly rigid and hard
What bonds form when natural rubber undergoes vulcanisation with sulfur?
What bonds form when natural rubber undergoes vulcanisation with sulfur?
bonds
Why can't heavily cross-linked polymers be recycled by melting?
Why can't heavily cross-linked polymers be recycled by melting?
Covalent bonds don't break when heated
What causes PVC to degrade when exposed to sunlight?
What causes PVC to degrade when exposed to sunlight?
UV light breaks bonds
How does copolymerisation with starch increase polymer biodegradability?
How does copolymerisation with starch increase polymer biodegradability?
Microorganisms break natural segments