Question

two examples of emulsifying agent. What are the properties of colliods? Explain any 4 properties of colloidal solution.

Answer 1

Emulsifying agent: soaps, detergents.

1. A colloid is a heterogeneous mixture.
2. The size of the solute particles in a colloid is bigger than in a solution, but smaller than in a suspension. They are between 1 nm and 1000 nm in diameter.
3. The solute particles present in a colloidal solution cannot be seen even with a microscope.
4. As the size of the particles present in colloids is quite large, they scatter the beam of light passing through them.
5. The solute particles of a colloid cannot be filtered using a filter paper.
6. Colloids are quite stable. Their particles do not settle down when left undisturbed.