Key term for Edexcel GCSE Chemistry, used in Fuels.
A substance that is naturally present in a material but is not part of its primary chemical makeup and is generally undesirable.
Impurity appears in Edexcel GCSE Chemistry revision content for Fuels and Earth Science, especially Fuels and Sulfur Dioxide Pollution.
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States of Matter and Mixtures
Separating and Purifying Substances • Pure Substances vs Mixtures
