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Cambridge IGCSE Chemistry practice

Paper 3 structured question: Alkenes

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Alkenes

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Paper 3Theory (Core)2 marks

A student performs a test with bromine water and observes that the solution remains brown.

Description

Observation of Bromine Water Test

The student adds bromine water to a sample of hydrocarbon and notes that the solution does not change color.

  1. a

    Describe What can be concluded about the hydrocarbon based on this observation?

    Aim for approximately 2 distinct marking points.

    [2]

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Paper 3 structured question: Alkenes

Paper 3Theory (Core)1 marks

Description

Bromine Water Test

When bromine water is added to a sample of hydrocarbon, the following observations are made: The solution turns colorless after a few minutes.

  1. a

    State What type of hydrocarbon is indicated by the decolorization of bromine water?

    Aim for approximately 1 distinct marking point.

    [1]