Question

What is meant by sublimation? Give its one example.

Answer 1

• Matters normally exist in three states viz. solid, liquid and gas.
• The states of matters can be interchanged with the release or absorption of heat.
• State change can be understood from the flow chart given below.
• $\mathrm{Solid}\underset{\mathrm{Freezing}}{\overset{\mathrm{Melting}}{\rightleftharpoons }}\mathrm{Liquid}\underset{\mathrm{Condensation}}{\overset{\mathrm{Boiling}}{\rightleftharpoons }}\mathrm{Gas}$

Sublimation- Sublimation is a process in which a matter goes from the solid-state to the gaseous state directly without undergoing into the liquid state.

Example-

• Camphor solid directly changes into the gaseous state.
• Naphthalene balls also undergo sublimation.