- THE RULE: A more reactive metal ALWAYS displaces a less reactive metal from its compound
- If the added metal is LESS reactive than the metal in the compound → NO REACTION
- The metal doing the displacing is OXIDISED (loses electrons, forms positive ions)
- The metal ion being displaced is REDUCED (gains electrons, forms metal atoms)
- OIL RIG: Oxidation Is Loss, Reduction Is Gain (of electrons)
- Spectator ions don't change during the reaction — they're the same on both sides
- Displacement reactions are EXOTHERMIC (release heat energy)
This key facts covers Key Facts to Memorise within Displacement Reactions for GCSE Chemistry. Revise Displacement Reactions in Chemical Changes for GCSE Chemistry with 22 exam-style questions and 20 flashcards. Use this page as part of a wider topic revision path rather than treating it as an isolated fact. It is section 5 of 13 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Practice questions for Displacement Reactions
Which statement correctly describes a displacement reaction?
In the reaction between zinc and copper sulfate solution, explain which species is oxidised and which is reduced. Include half equations in your answer. [3 marks]
Quick recall flashcards
What colour is bromine?
Orange/brown
What does OIL RIG stand for?
Oxidation Is Loss (of electrons), Reduction Is Gain (of electrons)