International ASChemistryEdexcelRevision Notes1. Structure, Bonding & Introduction to Organic ChemistryAlkenesSaturation Test

Saturation Test (Edexcel International AS Chemistry) : Revision Note

Stewart Hird

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Saturation Test

  • Halogens can be used to test if a molecule is unsaturated (i.e. contains a double bond)

  • Br2(aq) is an orange or yellow solution, called bromine water and this is the halogen most commonly used

  • The unknown compound is shaken with the bromine water

  • If the compound is unsaturated, an addition reaction will take place and the coloured solution will decolourise

Hydrocarbons Bromine Water, downloadable AS & A Level Chemistry revision notes

The decolourisation of bromine water by an unsaturated compound as a result of an addition reaction

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Stewart Hird

Author: Stewart Hird

Expertise: Chemistry Lead

Stewart has been an enthusiastic GCSE, IGCSE, A Level and IB teacher for more than 30 years in the UK as well as overseas, and has also been an examiner for IB and A Level. As a long-standing Head of Science, Stewart brings a wealth of experience to creating Topic Questions and revision materials for Save My Exams. Stewart specialises in Chemistry, but has also taught Physics and Environmental Systems and Societies.

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