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Part of Electrolysis of Molten Compounds — GCSE Chemistry

This memory aid covers Memory Aids within Electrolysis of Molten Compounds for GCSE Chemistry. Revise Electrolysis of Molten Compounds in Electrolysis for GCSE Chemistry with 20 exam-style questions and 0 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 8 of 11 in this topic. Use it for quick recall, then test yourself straight afterwards so the memory aid becomes usable in an answer.

Topic position

Section 8 of 11

Practice

20 questions

Recall

0 flashcards

🧠 Memory Aids

CATions go to the CAThode, ANions go to the ANode

Both "CATion" and "CAThode" start with "CAT". Both "ANion" and "ANode" start with "AN". This makes it easy to remember which ion goes where.

OIL RIG — Oxidation Is Loss (of electrons), Reduction Is Gain (of electrons)

At the Anode = Oxidation (A and O are both vowels!)

At the Cathode = Reduction (both contain the letter C!)

For predicting molten products: "Metal at the Minus, Non-metal at the Plus" — cathode is negative (minus) → metal; anode is positive (plus) → non-metal.

Keep building this topic

Read this section alongside the surrounding pages in Electrolysis of Molten Compounds. That gives you the full topic sequence instead of a single isolated revision point.

Common MisconceptionsExam FocusBreaking Free — The Prison Break of IonsElectrolysis Cell

Practice Questions for Electrolysis of Molten Compounds

Which condition is required for electrolysis to occur with an ionic compound?

  • A. The ions must be free to move (molten or in solution)
  • B. The compound must be dissolved in organic solvent
  • C. The compound must be heated above 1000 °C
  • D. The compound must contain metallic bonds
1 markfoundation

State the products formed at each electrode when molten lead bromide (PbBr₂) is electrolysed.

2 marksstandard

Quick Recall Flashcards

Why does solid lead bromide NOT conduct electricity?
In the solid state, all ions (Pb²⁺ and Br⁻) are held in fixed positions in the ionic lattice by strong electrostatic forces. They cannot move, so they cannot carry electrical charge.
How do you remember that cations go to the cathode?
CATions → CAThode (both start with CAT) ANions → ANode (both start with AN) Metal at the Minus (cathode is negative), Non-metal at the Plus (anode is positive).

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