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Electrolysis of Aluminium

Revise Electrolysis of Aluminium in Electrolysis for GCSE Chemistry with 20 exam-style questions and 0 flashcards. This is a high-frequency exam topic, so students should expect to explain it clearly under timed conditions.

Study this topic

1

The Metal That Changed History

Introduction2

Electrolysis of Aluminium Oxide

Diagram3

How It Works: Why Cryolite is Essential

How It Works4

Half Equations — Must Know!

Diagram5

The Hall-Héroult Process — Step by Step

How It Works6

Key Definitions

Definitions7

Key Facts to Memorise

Key Facts8

Common Misconceptions

Misconceptions9

Memory Aids

Memory Aid10

Exam Focus

Exam Focus11

Exam Tips for Electrolysis of Aluminium

Exam Tips12

Worked Model Answer

Exam Focus13

Topic Summary: Electrolysis of Aluminium

Summary

Sample Flashcards

What does OIL RIG stand for?
Oxidation Is Loss (of electrons), Reduction Is Gain (of electrons). At the Anode = Oxidation (loss). At the Cathode = Reduction (gain).
Why do the carbon anodes need replacing regularly?
At 950°C, the oxygen produced at the anode reacts with the hot carbon: C + O₂ → CO₂. The carbon is gradually burned away, so the anodes must be replaced periodically.

Sample Questions

Why is aluminium extracted by electrolysis rather than by reduction with carbon?

  • A. Aluminium is less reactive than carbon
  • B. Aluminium is more reactive than carbon
  • C. Aluminium does not form ions
  • D. Carbon reacts with aluminium to form carbides
1 markfoundation

Explain why aluminium is extracted by electrolysis rather than by reduction with carbon.

2 marksstandard

20

exam-style questions

0

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