Lesson 4.4.3.1

4.4.3.1 The process of electrolysis Quiz: AQA Chemistry, Unit 4

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson 4.4.3.1, The process of electrolysis: 20 multiple choice questions for the AQA GCSE Chemistry (8462), Unit 4: Chemical changes, written with Revision Ninja.

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The 20 questions

  1. What term describes a liquid or solution that conducts electricity?

    • Electrolyte
    • Electrode
    • Nonelectrolyte
    • Catalyst

  2. During electrolysis, which ions move towards the cathode?

    • Neutral molecules
    • Electrons only
    • Negative ions
    • Positive ions

  3. Which electrode do negatively charged ions move towards?

    • The anode
    • Neither electrode
    • The cathode
    • Both electrodes

  4. What is the name of the process in which ions are discharged at electrodes to form elements?

    • Titration
    • Filtration
    • Electrolysis
    • Distillation

  5. What do ions form when they are discharged at the electrodes?

    • Compounds
    • Water only
    • Elements
    • Electrons

  6. During electrolysis, what happens to negative ions at the anode?

    • Lose protons
    • Gain electrons
    • Lose electrons
    • Gain protons

  7. Why do ions move towards the electrodes during electrolysis?

    • Diffusion drives flow
    • Like charges repel
    • Opposite charges attract
    • Gravity pulls them

  8. Why can a molten ionic compound conduct electricity?

    • Electrons can move
    • Ions can move
    • Covalent bonds break
    • Molecules are free

  9. Which substance does not conduct electricity?

    • Molten sodium chloride
    • Solid sodium chloride
    • Molten lead bromide
    • Sodium chloride solution

  10. Why is electrolysis classified as a decomposition reaction?

    • Splits into elements
    • Creates new atoms
    • Forms a compound
    • Releases heat energy

  11. Electrolysis is particularly useful for extracting metals that are what?

    • Too reactive
    • Too abundant
    • Found uncombined
    • Too cheap

  12. How do ions complete the electrical circuit in a molten ionic compound?

    • Remain totally fixed
    • Evaporate as gas
    • Flow through wires
    • Move to electrodes

  13. What is the electrical charge of the cathode during electrolysis?

    • Variable
    • Negative
    • Neutral
    • Positive

  14. Which electrode is connected to the negative terminal of the supply?

    • The electrolyte
    • The anode
    • The cathode
    • The terminal

  15. Which of these can act as an electrolyte?

    • Pure distilled water
    • Solid lead bromide
    • Solid sodium chloride
    • Molten lead bromide

  16. What name is given to a conducting liquid containing mobile ions?

    • Suspension
    • Solution
    • Electrolyte
    • Solvent

  17. During electrolysis, what happens to positive ions at the cathode?

    • Reduced
    • Neutralised
    • Evaporated
    • Oxidised

  18. What process uses electricity to break down ionic compounds?

    • Neutralisation
    • Distillation
    • Electrolysis
    • Filtration

  19. What property must electrodes have when used in electrolysis?

    • Reactive
    • Insulating
    • Inert
    • Magnetic

  20. Why is a solid ionic compound unable to conduct electricity?

    • Bonds are covalent
    • Ions are absent
    • Ions are fixed
    • Electrons are free

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