Question

define sublimation and explain it through an activity. ( for class 9, chemistry) plssssss

Answer 1

sublimation is the process by which a solid directly changes to it's gaseous state without going through the liquid state.
For example, moth balls and camphor when heated produces a white gas.

Answer 2

Sublimation is the transition of a substance directly from the solid to the gas state, without passing through the liquid state. ... The reverse process of sublimation is deposition or desublimation, in which a substance passes directly from a gas to a solid phase.