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CAIE IGCSE Chemistry 4.1.8 Transfer of charge during electrolysis

Practise tracing charge transfer in electrolysis through electron flow in wires, ion movement in solution and electrode reactions.

Syllabus
2026–2028
Course
Chemistry 0620

Exam points

  • interpret arrows for electron movement in the external circuit towards the cathode
  • link cations moving to the cathode and anions moving to the anode in electrolytes
  • explain gain or loss of electrons at electrodes using ions

4.1.8—Transfer of charge during electrolysis question 1

[Maximum number: 2]

Aluminium is extracted from aluminium oxide by electrolysis.

Aluminium can be extracted by electrolysis using the apparatus shown.

Figure for Question 4.1.8—Transfer of charge during electrolysis question 1 — CAIE IGCSE Chemistry

Name the type of particle responsible for the transfer of charge in
the wires, the electrolyte.

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