Lesson 5.2.2.5

5.2.2.5 Polymers Quiz: AQA Combined Science, Unit 9

20 questions

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Lesson 5.2.2.5, Polymers: 20 multiple choice questions for the AQA GCSE Combined Science (8464), Unit 9: Bonding, structure, and the properties of matter, written with Revision Ninja.

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The 20 questions

  1. Polymers have:

    • Very large molecules
    • Giant ionic lattices
    • Very small molecules
    • Free electrons
  2. Within polymer molecules, atoms are linked by:

    • Weak hydrogen bridges
    • Strong covalent bonds
    • Metallic bonds
    • Ionic bonds
  3. Intermolecular forces between polymer molecules are:

    • Metallic
    • Non-existent
    • Relatively strong
    • Very weak
  4. Polymers are usually at room temperature:

    • Solids
    • Gases
    • Liquids only
    • Plasma
  5. What feature helps identify polymers in structural diagrams?

    • Metal lattices
    • Repeating units
    • Isolated atoms
    • Free ions
  6. Polystyrene is a:

    • Polymer
    • Ionic compound
    • Noble gas
    • Giant metallic structure
  7. Why are polymers solid at room temperature unlike methane?

    • Strong intermolecular forces
    • Free mobile ions
    • Weak covalent bonds
    • Delocalised electrons
  8. How are atoms joined together along each polymer chain?

    • Covalent bonds
    • Metallic bonds
    • Intermolecular forces
    • Ionic bonds
  9. How is a long polymer chain best classified structurally?

    • Ionic lattice
    • Metallic structure
    • Giant molecule
    • Small molecule
  10. Why does poly(ethene) have a higher melting point than methane?

    • Larger molecules
    • Ionic bonding
    • Smaller mass
    • Weak forces
  11. Which substance is a polymer?

    • Chlorine
    • Poly(propene)
    • Carbon monoxide
    • Ammonia
  12. What bonds and forces are present in polymers?

    • Metallic within chains
    • Covalent between chains
    • Ionic within chains
    • Covalent within chains
  13. Which structural feature is most consistent with a polymer diagram?

    • Isolated sphere
    • Simple pair
    • Repeating chain
    • Crystal lattice
  14. Why do solid polymer chains not conduct electricity?

    • Weak covalent bonds
    • Ionic lattices
    • Delocalised electrons
    • No free ions
  15. Polymer Y melts at 300 °C while polymer X melts at 150 °C. Which has stronger intermolecular forces?

    • Polymer X
    • Neither has forces
    • Polymer Y
    • Both are equal
  16. How do intermolecular forces in polymers compare to their covalent bonds?

    • Exactly equal
    • Completely absent
    • Much weaker
    • Much stronger
  17. Why do polymers have relatively high melting points for molecular substances?

    • Giant covalent bonds
    • Metallic bonding
    • Strong intermolecular forces
    • Ionic crystal lattices
  18. When a polymer melts, which bonds remain completely unbroken?

    • Hydrogen bonds
    • Ionic bonds
    • Covalent bonds
    • Metallic bonds
  19. What does a polymer repeating unit indicate about its structure?

    • Identical joined units
    • Random atom mixing
    • Metallic crystal lattices
    • Single isolated atoms
  20. How are neighbouring carbon atoms linked along a polymer chain?

    • Ionic bonds
    • Intermolecular forces
    • Covalent bonds
    • Metallic bonds

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