Pure substance
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I can describe what a pure substance is, and identify a pure substance from melting and boiling point data.
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A 'pure substance' in chemistry is a single element or compound not mixed with any other substance.
The definition of 'pure' means something different in its everyday usage.
Pure elements and compounds have specific melting and boiling points.
Melting point data can be used to recognise substances with specific melting points as pure substances.
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