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Chemistry

GCSE Chemistry

AQA

Chemical Analysis

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7 Terms

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Pure Substance

A substance that has nothing added to it

2

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Impure substance

boils over range

3

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Exothermic

releases energy

4

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Endothermic

absorbs energy

5

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Formulation

A mixture designed for a specific purpose

6

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Chromatography

used to separate the components of a solution

7

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Rf value equation

distance from the base line / distance from the base line to the solvent front

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