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Outline the general features of a homologous series, which include: (a) sharing the same functional group (b) having the same general formula (c) differing by a -CH2- unit between members (d) showing a trend in physical properties (e) exhibiting similar chemical properties.

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Cambridge IGCSE ChemistryOrganic chemistrySupplement content

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Outline the general features of a homologous series, which include: (a) sharing the same functional group (b) having the same general formula (c) differing by a -CH2- unit between members (d) showing a trend in physical properties (e) exhibiting similar chemical properties

  • This point belongs to Formulae, functional groups and terminology, especially Formulae, functional groups and terminology outcomes.
  • You need to be able to outline the general features of a homologous series, which include: (a) sharing the same functional group (b) having the same general formula (c) differing by a -CH2- unit between members (d) showing a trend in physical properties (e) exhibiting similar chemical properties.
  • The key ideas to know are Describe and Outline.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

DescribeOutline

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This objective helps connect Formulae, functional groups and terminology outcomes to exam-style questions, flashcards, and revision notes for Formulae, functional groups and terminology.

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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]
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