Question

what is an colloidwhat is a colloid and what are the examples of colloid

Answer 1

$\textbf{ Hello Mate! }$

■ A colloid is a homogenous looking heterogenous mixture

■ Whose particles size is bigger than that of a true solution

■ But yet not big enough to be seen through naked eyes.

■ They shows tyndell effect

■ They are stable, means solute particles can't be seperated from solvent by filter paper.

Example :-

● Blood
● Milk etc.

A Colloid is divided onto

Dispersed phase ( solute ) and dispersed medium ( solvent )

When water is mixed in gas then it form Aerosol. ⏩ Fog and mist

When solid is mixed in gas then its called solid aerosol. ⏩ Smoke

When gas is mixed in liquid then it forms foam.⏩ Cold drinks

When liquid is mixed in liquid its called emulsion.⏩ Facecream

When solid in liquid then its called sol.⏩ Coper sulphate + water

When gas in solid then its called foam.⏩ Sponge

When liquid in a solid is called jel.⏩ Jelly

When solid in solid is called solid sol.⏩ Gems.

Have great future ahead!

Answer 2

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Colloidal Solution - A solution in which the size of the solute particles are intermediate between those in true solution and suspension.

For Example - Milk, Blood, Ink and solution etc.

Properties of Colloidal solution -

• A colloid is a heterogeneous mixture but appear as homogeneous.

• They are translucent.

• The particles of colloids are too small to be seen by naked eyes.

• Particle size of colloids are 1-1000 nm.

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

• They do not settle down when left undisturbed.

• They cannot be separated by filtration process but can be separated by centrifugation method.