Pick the correct combination to show what is collected at each electrode when molten copper bromide is electrolysed.

Copper ions at the cathode, Bromine gas at the anode

Copper metal at the anode, Bromide ions at the cathode

Copper metal at the cathode, Bromine gas at the anode

Copper metal at the anode, Bromine gas at the cathode

When a negatively charged ion reaches the positively charged electrode...

It can lose an electron to become a neutral atom

It can lose an electron to become a positive ion

It gains an electron to become a neutral atom

It gains an electron to become a negative ion

When lead bromide is electrolysed...

Pb 2+ is reduced at the cathode, Br- is oxidised at the anode

Pb2+ is oxidised at the cathode, Br- is reduced at the anode

Pb2+ is reduced at the anode, Br- is oxidised at the cathode

Pb3+ is reduced at the cathode, Br- is oxidised at the anode

Why does an electrolyte need to be either molten or in solution?

So that water ions can be involved in the reaction

So that the electrodes can be put in the electrolyte

Pick the correct half equations to show what happens when PbBr2 is electrolysed.

Cathode: Pb+ + e- → Pb Anode: 2Br- → Br2 + 2e-

Anode: Pb2+ + 2e- → Pb Cathode: 2Br- → Br2 + 2e-

Cathode: Pb2+ + 2e- → Pb Anode: Br- → Br + 2e-

Cathode: Pb2+ +2e- → Pb Anode: 2Br- → Br2 + 2e-

Electrolysis means which of the following?

Splitting up substances using heat

Splitting up substances using electrons

Splitting up substances using electricity

Joining up substances using electricity

Pick the correct half equations to show what happens when an aqueous solution of KCL is electrolysed.

Cathode: K+ + e- → K Anode: 2Cl- → Cl2 +2e-

Cathode: 2H+ + 2e- → H2 Anode: 2Cl- → Cl2 + 2e-

Cathode: H+ + e- → H Anode: 2Cl- → Cl2 +2e-

Cathode: K+ + e- → K Anode: Cl- → Cl + e-

During electrolysis...

+ve ions move to cathode and -ve ions move to anode

+ve ions move to anode and -ve ions move to cathode

+ve ions and -ve ions move to cathode

+ve ions and -ve ions move to anode

GCSEChemistry★★ Medium

GCSE Chemistry Electrolysis 1 Quiz

Learn how electrolysis breaks down ionic compounds test your understanding of electrodes cations and half equations in this GCSE Chemistry quiz

Written by Dr. Olivia BennettReviewed by Dr. Chloe EdwardsUpdated 17 Mar 2026

Quizzes and Guides GCSE Chemistry

Overview

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Quiz details

Topic: 1

Questions: 10

Duration: 10 min

Difficulty: ★★ Medium

Focus: using 1 accurately with equations, units and observation language.

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Common mistakes to catch early

Missing units in calculations
Confusing observation with explanation
Unbalanced equations or incomplete state symbols

Quick answers

What does this quiz measure?

It measures applied accuracy in 1, not just definition recall.

What should I do after a low score?

Fix one error category first, then retake before moving to the next related quiz.

What is the best next step?

Use more Chemistry quizzes to widen coverage, then switch to GCSE Chemistry revision topics before full-paper timing.

Description

Learn how electrolysis breaks down ionic compounds test your understanding of electrodes cations and half equations in this GCSE Chemistry quiz

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Complete the quiz once under normal timing, review every mistake, then return to the Chemistry subject page to try a related quiz while the topic is still fresh.

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Use your score as a signal. If the result is strong, move to another Chemistry quiz for wider coverage. If the result is weak, repeat practice in the same subject before switching topics.

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