Question

2. Explain diffusion with the help of an example.​

Answer 1

Diffusion is the process wherein the molecules merge as a result of their kinetic energy of random motion. It occurs in liquids and gases because their molecules move randomly. The molecules move from a region of higher concentration to a region of lower concentration, down the concentration gradient, until the concentration equalizes throughout the medium.

Example :

A teabag immersed in a cup of hot water will diffuse into the water and change its colour.

A spray of perfume or room freshener will get diffused into the air by which we can sense the odour.

Sugar gets dissolved evenly and sweetens the water without having to stir it.

Answer 2

Answer:

Diffusion is a physical process that refers to the net movement of molecules from a region of high concentration to one of lower concentration. ... For instance, a gas diffuses very quickly in another gas.