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Cambridge IGCSE Chemistry practice

Paper 4 structured question: Formulae, functional groups and terminology

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Formulae, functional groups and terminology

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Paper 4Theory (Extended)4 marks

Understanding homologous series is essential for predicting chemical behavior.

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Homologous Series Features

Members of a homologous series share the same functional group and differ by a -CH2- unit, showing trends in physical properties and similar chemical properties.

  1. a

    Outline the features of a homologous series.

    Aim for approximately 4 distinct marking points.

    [4]

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Paper 4 structured question: Formulae, functional groups and terminology

Paper 4Theory (Extended)1 marks

Description

Characteristics of Homologous Series

A homologous series is defined by specific features that include a common functional group, a general formula, and a consistent difference in structure between members.

  1. a

    State the general formula for alkanes.

    Aim for approximately 1 distinct marking point.

    [1]