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2.1 Purity and separating mixtures

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Question 20

A café makes coffee by pouring hot water over coffee grounds in a paper filter. The coffee solution passes through the paper and the grounds stay behind.

Which property of the coffee grounds allows them to be separated from the coffee solution in this way?

[1]
A

They have a higher boiling point than water.

B

They are soluble in hot water.

C

They are insoluble in water.

D

They contain several different substances.

Markscheme

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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