Simple differences between mixtures and compounds

1 mark · Normal

Which statement describes a key difference between a pure substance and a mixture?

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Correct option: A pure substance has a sharp melting point; a mixture melts over a range.

Common mistakes: Confusing mixture and pure substance properties.

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Marking points

A1 · 1 mark · Chooses correct statement on melting point

Worked solution

Option A is correct: pure substances have fixed melting points, mixtures do not.