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Cambridge IGCSE Combined Science practice

Paper 3 structured question: Alkenes

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Alkenes

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Paper 3Theory (Core)1 marks

Alkenes are important in organic chemistry due to their unique properties.

Description

Properties of Alkenes

Alkenes are hydrocarbons that contain at least one double bond between carbon atoms. They are classified as unsaturated hydrocarbons and are known for their reactivity in addition reactions.

  1. a

    Define the term 'alkene'.

    Aim for approximately 1 distinct marking point.

    [1]

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Paper 3 structured question: Alkenes

Paper 3Theory (Core)2 marks

Description

Reactivity of Alkenes

Due to the presence of a double bond, alkenes can react with halogens, hydrogen, and other reagents in addition reactions.

  1. a

    Explain why alkenes are considered unsaturated hydrocarbons.

    Aim for approximately 2 distinct marking points.

    [2]