What are colloids ? Write properties also
Answers
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QUESTION :- what are colloids ?
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ANSWER :- colloid is a heterogeneous mixture whose particles are not as small as solution but they are so small that cannot be seen by naked eye. When a beam of light is passed through a colloid then the path of the light becomes visible. For example milk, smoke etc.
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QUESTION :- what are the properties of colloids ?
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ANSWER :-
• 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.
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Answer:
Explanation:
A colloid is a mixture that has particles ranging between 1 and 1000 nanometers in diameter, yet are still able to remain evenly distributed throughout the solution. These are also known as colloidal dispersions because the substances remain dispersed and do not settle to the bottom of the container.
Properties of a Colloid are :-
→ Collide is a heterogeneous mixture of a dispersed phase and a dispersion medium but due to small particle size, it appears as a homogeneous mixture to the naked eye.
→ The particle size varies from 1 to 100 nm (nano meters).
→ The particles of a colloid pass through filter paper, which means that they can not be separated by filtration.
→ Colloids are stable, that is, their particles don't settle down when left undisturbed for some time.