Question

Write the properties of suspension and colloids?​

Answer 1

Explanation:

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.

The colloids don't undergo sedimentation, while the suspensions undergo sedimentation. The colloids are relatively homogenous, while the suspensions are heterogeneous. The colloid particles can pass through filter paper, while the particles of the suspensions cannot.

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Answer 2

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Suspensions

It is a heterogeneous mixture in which the diameter of its particles is larger than 1000 nm and it can be distinguished by the naked eye, such as the sand in the water and Chalk’s powder in the water.

Properties of Suspensions

• A heterogeneous mixture .
• The diameter of its particles is larger than 1000 nm .
• The suspended particles precipitate , if it is left for a short time without shaking .
• The suspended particles can be be seen by the naked .
• The suspended particles can be separated by filtration because filter paper ( ultrafiltration membrane ) can hold the suspended particles, while the water passes through it.

Colloids

It is a heterogeneous mixture in which the diameter of its dispersed particles ranges between 1: 1000 nm and it can be distinguished by the electron microscope .

Properties of Colloids

• A heterogeneous mixture ( apparently homogeneous).
• The diameter of the dispersed particles is 1 – 1000 nm .
• The dispersed particles do not precipitate , if they are left for a short time without shaking .
• The dispersed particles can be seen by the electron microscope only.
• The dispersed particles can’t be separated by filtration .
• The shape depends on its concentration : Concentrated colloids appear as milk or clouds , Diluted colloids appear clear .