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2.1 Purity and separating mixtures

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Question 2
F

Which statement describes a pure substance in chemistry?

[1]
A

A substance that has had nothing artificial added to it.

B

A substance that contains only one element or one compound.

C

A substance that is taken straight from nature without processing.

D

A mixture that does not contain any harmful substances.

Markscheme

2.1 Purity and separating mixtures Questions

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

51 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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