define colloid solution and its two properties
Answers
Answer: Colloid: 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. Properties of a colloid.
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.
�Properties of a colloid
� 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.