Question

Solids cannot diffuse into solids.

• A. True
• B. False

Answer 1

The correct option is A True

The properties of solids are:

1. Solids have a definite shape, size, and volume.
2. They are rigid. They do not possess the property of fluidity.
3. They have low compressibility.
4. Rate of diffusion in solids is very very low or negligible.
5. The particles of solids are closely packed hence they do not move but keep on oscillating around their mean positions.
6. They have any number of surfaces.

Diffusion is the intermixing of different particles of matter on their own. The particles of solids are closely packed so they do not move but just oscillate around their mean position. As they do not have kinetic energy so they do not show diffusion.

Conclusion: Hence the given statement is true as solids show negligible or very low diffusion.