This key facts covers Key Facts to Memorise within Displacement Reactions for GCSE Chemistry. Revise Displacement Reactions in Chemical Changes for GCSE Chemistry with 20 exam-style questions and 20 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 5 of 12 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 5 of 12
Practice
20 questions
Recall
20 flashcards
📌 Key Facts to Memorise
- 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)