Chemical Changes and Extraction · Chemical Reactions

Electrolysis

Using electricity to decompose ionic compounds into their constituent elements.

Key Questions

  1. 1How does an electric current force ions to move and discharge at electrodes?
  2. 2Why is electrolysis required for the extraction of aluminum but not for iron?
  3. 3What determines which ions are discharged at the electrodes in an aqueous solution?

National Curriculum Attainment Targets

GCSE: Chemistry - Chemical ChangesGCSE: Chemistry - Electrolysis
Year: Year 10
Subject: Chemistry
Unit: Chemical Changes and Extraction
Period: Chemical Reactions

Suggested Methodologies

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