Question

What is a colloidal solution?

Answer 1

Colloidal solution:

• The mixture in which one substance of dispersed insoluble particles is suspended throughout the other substance is known as colloidal solution or colloids.
• Colloids can be classified on the basis of the phase of the dispersed substance and the phase in which it is dispersed.
• Sol, emulsion, foam, and aerosol are the different types of colloids.
• The colloidal suspension with solid particles in a liquid is known as Sol.
• An emulsion is a mixture of two liquids.
• Foam is formed when many gas particles are trapped in a liquid or solid.
• Aerosol contains small particles of liquid or solid dispersed in a gas.
• The colloid particles are generally ranged from 1 to 1000 nanometres $({10}^{-9}\mathrm{metres})$
• Examples of colloids are milk, paint, blood..etc