Loading…
Loading…
GCSE Chemistry · key term
A reaction in which a more reactive element replaces a less reactive element in a compound.
Used by AQA, Edexcel and OCR
Specification 4.1.2.6, 4.4.1.2 · Paper 1
A reaction in which a more reactive element replaces a less reactive element in one of its compounds.
A reaction in which a more reactive element takes the place of a less reactive element in a compound.
Specification 4.1, 4.2, 6.11, 6.12, 7.9 · Paper 1, Paper 2
A reaction in which a more reactive metal replaces a less reactive metal in its compound.
A reaction in which a more reactive element takes the place of a less reactive element in a compound.
Specification C4.1a, C4.1d, C4.1f, PAG 1 · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
A reaction in which a more reactive element takes the place of a less reactive element in a compound.
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
A reaction in which a more reactive element replaces a less reactive element in one of its compounds.
A reaction in which a more reactive element takes the place of a less reactive element in a compound.
In a salt-solution question, identify which metal is added and which metal is present in the dissolved salt. A displacement reaction shows that the added metal is more reactive.
When asked to explain why a displacement reaction is redox, name both changes: the more reactive metal loses electrons and is oxidised; the displaced metal ions gain electrons and are reduced.
In a displacement reaction, compare the free halogen with the halogen in the metal halide. A more reactive halogen displaces a less reactive one, not the reverse.
Create a free account to read GCSE Chemistry revision notes for your exam board and track your progress.