Question

What are Colloids!?..... Give some important Properties of Colloidal Solutions. ​

Answer 1

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A colloid is an intermediate state of true solution and Suspension .A colloid is a heterogeneous system in which one substance is dispersed. For example, in milk, water Is dispersed Medium while fats, proteins etc, Constitute Disperse phase

Properties -:

-They are heterogeneous mixture

-The size of the colloidal particles ranges from 1nm to 1000nm

-The path of a bean of light becomes Visible while passing through a colloidal solution

-Colloidal particles cannot be separated by simple sedimentation or filtration.

Answer 2

A homogeneous non-crystalline substance consisting of large molecules or ultramicroscopic particles of one substance dispersed through a second substance.

Colloids are relatively stable in nature.
Colloids require specialized filters known as ultrafilters for filtration.
Since colloids consist of two phases, the dispersed phase as well as dispersion medium , they are known as heterogeneous in nature.

hope it helps