What is the difference between a pure substance and a mixture?

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Pure substances have a fixed boiling point which the mixture does not have.

Pure substances have fixed melting points which mixtures do not have.

Pure substances have a definite composition while mixtures do not have it

All of the above

answer is D.

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Detailed Solution

Difference between mixtures and Pure substances

Pure substances have a fixed boiling point which the mixture does not have.

Pure substances have a fixed melting point which mixtures do not have.

Pure substances have a definite composition while mixtures do not have it

A pure substance contains one type of particles while a mixture contains different types of particles.

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