what are the properties of colloids ?
Answers
Hey mate !!
• A colloid ( or colloidal solution) appears to be homogenous but actually it is heterogeneous.
• The size of particles in colloidal solution is intermediate to that of solution particles and suspension particles (i.e the particle size is in between 1nm - 100nm.)
• The particles of colloidal solution are unstable.
• The particles of colloid can pass through a filter paper. They can only get separated by the process of centrifugation.
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.
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.
Hope it helps...