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2.1 Purity and separating mixtures

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Question 7

A manufacturer uses four different methods to make materials.

Which method produces a formulation?

[1]
A

Several components are mixed in measured quantities for a particular use.

B

Two substances are mixed together in proportions that are not controlled.

C

Two elements react and their atoms bond in a fixed ratio.

D

One compound is purified until no other substance is present.

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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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