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List any four properties of colloids. Give two examples |
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Answer» A 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. Properties1. A colloid is a heterogeneous mixture.2. The size of particles of a colloid is too small to be individually seen by naked eyes.3. Colloids are big enough to scatter a beam of light passing through it and make its path visible.4. They do not settle down when left undisturbed, that is, a colloid is quite stable.5. 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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