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Chemistry · Paper 2 · Foundation + Higher · C7

Alkenes and the bromine-water test

Key ideas1 of 3

Spot a carbon–carbon double bond

An alkene is an unsaturated hydrocarbon containing a C=C double bond. Alkenes are more reactive than alkanes. This example is C₂H₄; individual alkene names and formulae do not need to be memorised for Trilogy C7.

Displayed C₂H₄ molecule with a double bond between its carbons and two hydrogens on each carbon.

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Foundation + Higher · C7. All C7 lessons are shared by Foundation and Higher Tier.

AQA Combined Science Trilogy 8464 · 5.7.1.4. Original notes, questions and diagrams. Models are simplified, not to scale; illustrative data are labelled.