AQA GCSE Combined Science Trilogy · 8464
Specification 5.1.2.6, 5.4.1.2 · Paper 3
- Revise: Group 7 Halogens
- Revise: The Reactivity Series
A chemical reaction in which a more reactive element replaces a less reactive element in a compound.
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GCSE Combined Science · key term
A reaction in which a more reactive element replaces a less reactive element in a compound.
Used by AQA and Edexcel
Specification 5.1.2.6, 5.4.1.2 · Paper 3
A chemical reaction in which a more reactive element replaces a less reactive element in a compound.
Specification Obtaining and using metals, Group 7 · Paper 3, Paper 4
Keep colours in context: iodine is a grey solid, has a purple vapour and usually produces a brown solution in displacement reactions.
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