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प्रश्न
What are the characteristic properties of a pure substance? Why do we need them?
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उत्तर
Pure substance : Pure substances have a definite set of properties such as boiling point, melting point, density, etc. They are all homogeneous i.e., their composition is uniform throughout the bulk. Both elements and compounds are pure substances.
Pure substances are needed to :
- Manufacture medicines.
- To prepare chemicals in industry.
- For scientific purposes.
- To maintain the good health of human beings.
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संबंधित प्रश्न
Define :- Miscible liquids
A mixture of sulphur and carbon disulphide is :
Name the property of any one of the components which can be used for separating the following mixture :
Salt and Camphor
List four characteristics of a mixture.
Give two examples of the following type of mixture.
gas-gas
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Copper is not a part of the alloy
Name the following:
A physical method of separating iron from an iron-sulfur mixture.
Make a fruit or vegetable salad. Give reasons why you think it is a mixture.
Give the characters a mixture.
Supernatant denotes the heterogeneous mixture, lying above a solid residue, after crystallization, precipitation, centrifugation, or another process.
