Question

what is colloidal solution ​

Answer 1

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• In chemistry, a colloid is a phase separated mixture in which one substance of microscopically dispersed insoluble or soluble particles is suspended throughout another substance.

Answer 2

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A colloid is a substance microscopically dispersed evenly throughout another substance.

$\large\bold{\underline{\sf{\red{Properties\:of\:colloids:-}}}}$

• • A colloid is a heterogeneous mixture.

• • The size of particles of a colloid is too small to be individually seen by naked eyes.

• • Colloids are big enough to scatter a beam of light passing through it and make its path visible.

• • They do not settle down when left undisturbed, that is, a colloid is quite stable.

• • They cannot be separated from the mixture by the process of filtration. But, a special technique of separation known as centrifugation can be used to separate the colloidal particles.

$\large\bold{\underline{\sf{\purple{Example:-}}}}$

For example, milk is an emulsion, which is a colloid in which both parties are liquids.

$\Large \bold{\underline{\sf{\orange{Types\:of\:colloidal\:solutions:-}}}}$

The different types of colloidal solution are:

• Aerosols: Solid or liquid mixed with gas; Example: fog (liquid in gas)
• Sols: Solid mixed with liquid; Example: Paint
• Emulsion: Liquid with liquid; Example: oil and water
• Gel: liquid in solid; Example: Fruit jelly