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2.1 Purity and separating mixtures

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Question 1

A manufacturer is preparing a cosmetic cream using a recipe in which water accounts for 68% of the mass. One batch has a mass of 1.25 kg.

Calculate how many grams of water are needed to make the batch.

[2]
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2.1 Purity and separating mixtures Questions

  1. GCSE
  2. /Chemistry
  3. /2.1 Purity and separating mixtures

102 exam-style questions on OCR GCSE Chemistry 2.1 Purity and separating mixtures, covering 2.1.1 Pure substances and melting point data, 2.1.2 Relative formula mass and empirical formula, 2.1.3 Formulations as useful mixtures, 2.1.4 Techniques for separating mixtures, and 2.1.5 Chromatography and Rf values. Each one has a worked solution and a mark scheme showing where the marks go.

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