Differentiate between a pure and an impure substance.

Open in App

Solution

Pure substance
Impure substance
A pure substance is one in which all the molecules are of the same kind. A impure substance is one in which all the molecules are not of the same kind.
A pure substance is either an element or a compound. An impure substance is a mixture of two or more elements of compounds.
They can be represented by a chemical formula. They cannot be represented by a chemical formula.
They have fixed composition. Their composition may vary.
They cannot be separated by physical means. They can be separated by physical means.
Example: Silver, copper, sodium Example: Sea water, air, milk

Suggest Corrections

Similar questions

Difference between :

(a) Pure and impure substances

(b) Homogeneous and heterogeneous substances

On the basis of composition of matter, milk is considered to be :

(a) a pure substance (b) an impure substance (c) an element (d) a compound

Differentiate between pure and impure substances.

Join BYJU'S Learning Program

Pure substance	Impure substance
A pure substance is one in which all the molecules are of the same kind.	A impure substance is one in which all the molecules are not of the same kind.
A pure substance is either an element or a compound.	An impure substance is a mixture of two or more elements of compounds.
They can be represented by a chemical formula.	They cannot be represented by a chemical formula.
They have fixed composition.	Their composition may vary.
They cannot be separated by physical means.	They can be separated by physical means.
Example: Silver, copper, sodium	Example: Sea water, air, milk