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CP1: Investigating the Composition of Inks

Use paper chromatography to investigate and compare the composition of different inks

Required PracticalEdexcelGCSE

๐Ÿ”ฌ Equipment Required

  • Chromatography paper
  • Beaker
  • Water or suitable solvent
  • Different coloured inks or food colourings
  • Pencil (for baseline)
  • Ruler
  • Capillary tube or fine pipette
  • Glass rod
  • Watch glass or cover

๐Ÿฆบ Safety Precautions

  • Some solvents are flammable - no naked flames
  • Work in a well-ventilated area if using organic solvents
  • Avoid skin contact with some dyes

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About CP1: Investigating the Composition of Inks

CP1: Investigating the Composition of Inks is a required practical for Edexcel GCSE Chemistry. This practical use paper chromatography to investigate and compare the composition of different inks

Students are expected to understand the method, identify and control variables, use appropriate equipment, analyse results, draw graphs, identify sources of error, suggest improvements, and consider safety precautions.

Questions on required practicals frequently appear in Edexcel GCSE Chemistry exams and can be worth significant marks. Practice with our AI-generated questions to master this practical.

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