Question

Is air a Colloid?

Answer 1

Colloid:

• Colloid (colloidal solutions) is a mixture in which microscopically dispersed insoluble particles of one substance are suspended in another substance.
• The size of the suspended particles in a colloid can range from $1\mathrm{to}1000\mathrm{nanometres}(10-9\mathrm{metres})$.
• In colloids, the substance that is dispersed is knowns as the dispersed phase and the substance through which it is dispersed is called the continuous phase.

Is air a Colloid?

1. Yes, the air is a colloid since it contains dust particles and water vapour.
2. The size of the particles is 1nanometer to 1micrometer.