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3.2 Methods of separating and purifying substances

3.2 Methods of separating and purifying substances

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Question 52

Fresh water from reservoirs and rivers must undergo treatment to make it potable (safe to drink).

Three of the main processes involved in treating fresh water are:

  • filtration
  • sedimentation
  • sterilisation

Place these three processes in the correct order in which they are carried out from start to finish.

  • Stage 1 (First): __________
  • Stage 2 (Second): __________
  • Stage 3 (Third): __________
[2]
Markscheme

3.2 Methods of separating and purifying substances Questions

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

107 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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