Question

Which of the following statements are true? A solid can diffuse into a liquid, but a solid cannot diffuse into another solid. A solid can diffuse into both a liquid and another solid. A liquid can diffuse into another liquid. A gas can diffuse into another gas.

Answer 1

A solid can diffuse into a liquid, but a solid cannot diffuse into another solid.

A solid can diffuse into both a liquid and another solid.

Answer 2

Explanation:

The statements which are true are as follows.

• A solid can diffuse into both a liquid and another solid.
• A liquid can diffuse into another liquid.
• A gas can diffuse into another gas.

When we heat a solid it starts to melt as a result it diffuses into liquid. Whereas when we write with a chalk on a blackboard then the solid particles of chalk disperse on the solid surface of blackboard.

Therefore, a solid can diffuse into solid as well but the rate of diffusion is slow.

When we mix two liquids they tend to mix with each other. As a result, they diffuse into each other.

Similarly, a gas can diffuse into another gas as there is weak force of attraction between gas molecules and high kinetic energy. As a result, rate of diffusion is fast in gases.