Essential Chemistry for IGCSE - Particles And Purification (Section 5 - No. 48)
What is a key characteristic of a pure substance during melting?
Melting over a broad range of temperatures.
Melting at a specific, sharp temperature.
Melting that is dependent on the amount of substance.
Melting quickly at very low temperatures.
Explanation
Pure substances melt at a sharp temperature.
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