Simple differences between mixtures and compounds
1 mark · EasyState what you would observe about the melting behaviour of a pure substance.
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It melts at a sharp, fixed temperature.
Also accept: It melts at one temperature.; It has a sharp melting point.
Common mistakes: Melts over a range
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Marking points
B1 · 1 mark · States that a pure substance melts at a sharp/fixed temperature.
Worked solution
A pure substance melts at a sharp, fixed temperature.