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Explain the general features of a homologous series, including: (a) having the same general formula (specific formulas are not needed) (b) showing a trend in physical properties.

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Cambridge IGCSE Combined ScienceOrganic chemistrySupplement content

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Explain the general features of a homologous series, including: (a) having the same general formula (specific formulas are not needed) (b) showing a trend in physical properties

  • This point belongs to Terminology, especially Terminology outcomes.
  • You need to be able to explain the general features of a homologous series, including: (a) having the same general formula (specific formulas are not needed) (b) showing a trend in physical properties.
  • The key ideas to know are Describe.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

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Describe

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Paper 4Theory (Extended)2 marks

Description

Homologous Series Characteristics

A homologous series is defined by having the same general formula and showing a trend in physical properties such as boiling points and melting points as the molecular size increases.

  1. a

    Explain the significance of having the same general formula in a homologous series.

    Aim for approximately 2 distinct marking points.

    [2]
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