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Is Matter Around Us Pure

Question
CBSEENSC9004760
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Explain the following giving examples:


Colloid

Solution

Colloid: The particles of a colloid are uniformly spread throughout the solution. A colloid has the following characteristics:

(i) It is a heterogeneous mixture.

(ii) The size of particles of a colloid lies between 1–100 nm and are not visible to naked eye.

(iii) The particles of a colloid can scatter a beam of light.

(iv) The particles of a colloid cannot be separated from the mixture by filtration.

(v) The particles of a colloid do not settle when left undisturbed. Examples are smoke, milk, fog, cloud.

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