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Cambridge IGCSE Combined Science practice

Paper 4 structured question: Group VII properties

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Group VII properties

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Paper 4Theory (Extended)3 marks

Consider the reactivity of halogens in displacement reactions.

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Halogen Reactivity

Fluorine, chlorine, bromine, and iodine are halogens with varying reactivities.

  1. a

    Discuss the displacement reactions that occur between halogens and halide ions.

    Aim for approximately 3 distinct marking points.

    [3]

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Paper 4 structured question: Group VII properties

Paper 4Theory (Extended)2 marks

Description

Displacement Reaction Example

When chlorine gas is bubbled through a solution of sodium bromide, bromine is produced along with sodium chloride.

  1. a

    Explain why chlorine can displace bromine from sodium bromide.

    Aim for approximately 2 distinct marking points.

    [2]