GCSE Chemistry – Electrolysis

Last updated: 13/04/2020
AQA GCSE Science – Combined science higher Chemical changes GCSE Chemistry – Electrolysis

Learning Objectives

-I can explain why compounds need to be molten or dissolved to conduct
-I can describe the movement of ions during electrolysis
-I can predict the products of electrolysis
-I can describe what happens to aqueous solutions that are electrolysed
-I can describe how to test for chlorine gas, hydrogen gas and oxygen gas

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  1. Current
  2. Review
  3. Answered

  1. What is the definition of electrolysis?

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  2. When can compounds undergo electrolysis?

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  3. When can compounds undergo electrolysis?

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  4. What is the definition of the electrolyte?

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  5. Why are substances only able to undergo electrolysis when molten or dissolved?

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  6. Why are molten and dissolved compounds able to conduct electricity?

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  7. What is the definition of oxidation?

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  8. What is the definition of reduction?

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  9. What is the definition of an electrode?

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  10. What is the definition of the anode?

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  11. What is the definition of the cathode?

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  12. What type of substances are electrodes made from?

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  13. Which of the following substances could the electrodes be made from?

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  14. Which of the following substances could the electrodes be made from?

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  15. What process takes place at the anode?

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  16. What process takes place at the cathode?

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  17. What type of ions are attracted to the anode?

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  18. What type of ions are attracted to the cathode?

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  19. What happens to the electrons at the anode?

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  20. What happens to the electrons at the cathode?

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  21. Why do the opposite charged ions go to the electrodes?

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  22. If aluminium chloride is undergoing electrolysis, what product will be formed at the anode?

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  23. If aluminium chloride is undergoing electrolysis, what product will be formed at the cathode?

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  24. If an aqueous solution of copper chloride is undergoing electrolysis, what product is formed at the anode?

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  25. If an aqueous solution of copper chloride is undergoing electrolysis, what product is formed at the cathode?

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