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Answer 1

Answer:

What is Colloid?

A colloid is primarily a heterogeneous mixture in which the minute particles of one substance are dispersed in another substance, called the dispersion medium.

Dispersed Phase and Dispersion Medium

A colloid is a mixture in which one substance which has fine particles (dispersed phase)  mixed into another substance (dispersion medium). The particles of the colloids have a range from 1 to 1000 nm in diameter. The solution is called colloidal dispersion because the particles of solutions do not mix or settle down. They are dispersed in the solution.

The substances which are dispersed in the solution are called the dispersed phase, and the solution in which it is dispersed is called dispersion medium.

Based on the physical state of the dispersion medium and of the dispersed phase, colloids can be classified into:

Foam

Solid Foam

Aerosol

Emulsion

Gel

Solid Aerosol

Sols

Solid sols

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