Question

How are pure substances different from mixtures?

Answer 1

Answer:

Pure substances cannot be separated into any other kinds of matter, while a mixture is a combination of two or more pure substances. ... A pure substance has constant physical and chemical properties, while mixtures have varying physical and chemical properties (i.e., boiling point and melting point).

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Answer 2

Answer:

The components of pure substances are always in a fixed ratio and are uniformly distributed over the substance.

But in mixtures, the components can be in any ratio and are not uniformly distributed throughout the mixture.