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Learning objective

Explain the process of using paper chromatography to separate mixtures of soluble colored substances with an appropriate solvent.

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  • Read the explanation.
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  • Practise with linked questions.
Cambridge IGCSE Combined ScienceExperimental techniques and chemical analysisCore content

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Quick explanation

Explain the process of using paper chromatography to separate mixtures of soluble colored substances with an appropriate solvent

  • This point belongs to Chromatography, especially Chromatography outcomes.
  • You need to be able to explain the process of using paper chromatography to separate mixtures of soluble colored substances with an appropriate solvent.
  • The key ideas to know are Describe and Explain.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

DescribeExplain

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This objective helps connect Chromatography outcomes to exam-style questions, flashcards, and revision notes for Chromatography.

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Paper 3 structured question: Chromatography

Paper 3Theory (Core)3 marks

Description

Ink Chromatography

A student performed paper chromatography on a black ink mixture. They spotted the ink on chromatography paper and placed it in water as the solvent. After some time, they observed several distinct colored spots on the paper.

  1. a

    Explain the process of paper chromatography as demonstrated in the experiment.

    Aim for approximately 3 distinct marking points.

    [3]
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