Question

describe an experiment to demonstrate the process of sublimation

Answer 1

Burning of a camphor which change from solid state to gas without entering the state of liquid

Answer 2

Sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

Explanation:

Take some Ammonium chloride powder in a china dish. Cover the china dish with an inverted funnel and put a cotton plug in the end of the funnel so that vapors do not escape. Set up the apparatus as shown. Heat the dish with a burner. Solid ammonium chloride changes into vapors. Which when coming in contact of the walls of funnel get cooled and change to solid and get deposited there. Have a look on attachment.