Question

Differentiate between a pure substance and a mixture . give two example of each

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Answer 1

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1. Pure substances cannot be separated into any other kinds of matter, while a mixture is a combination of two or more pure substances.

2. A pure substance has constant physical and chemical properties, while mixtures have varying physical and chemical properties (i.e., boiling point and melting point).

3. A pure substance is pure, while a mixture is impure.

Answer 2

a pure substance is a single substance which can not be broken or separated into other kind of matter by any physical process. like water

where as mixture is the combination of two or more elements and compound which are not chemically combined together and may be present in any promotion .more over the constituents of mixture doesnt lose their identities.

like salt in water