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3.2 Methods of separating and purifying substances

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Question 1
F

Why is the start line drawn in pencil for paper chromatography?

[1]
A

Pencil lines are easier to rub out if a mistake is made

B

Ink would react with the paper and change its colour

C

Pencil does not dissolve and move with the solvent

D

Pencil helps the solvent to move up the paper evenly

Markscheme

3.2 Methods of separating and purifying substances Questions

  1. GCSE
  2. /Chemistry
  3. /3.2 Methods of separating and purifying substances

48 exam-style questions on Edexcel GCSE Chemistry 3.2 Methods of separating and purifying substances, covering 3.2.1 Pure substances and mixtures, 3.2.2 Techniques for separating mixtures, 3.2.3 Paper chromatography and Rf values, and 3.2.4 Making water potable. Each one has a worked solution and a mark scheme showing where the marks go.

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