Decolourise

Definition

To remove the colour from a substance during a chemical change.

Used by Edexcel

Specification 9.15C · Paper 2

Testing both samples separately therefore distinguishes them: the sample that decolourises bromine water is the alkene, while the sample that leaves it orange is the alkane.
Revise: Bromine Water Test

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GCSE Chemistry · key term

To remove the colour from a substance during a chemical change.

Used by Edexcel

Specification 9.15C · Paper 2

Testing both samples separately therefore distinguishes them: the sample that decolourises bromine water is the alkene, while the sample that leaves it orange is the alkane.
Revise: Bromine Water Test

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