Question

What is sublimation? give two examples of substances undergoing sublimation.

Answer 1

Sublimation -

It is a process in which a solid changes directly into a gas without changing into liquid.

Examples - Substances that undergo sublimation are Ammonium chloride $\left({\mathrm{NH}}_4\mathrm{Cl}\right)$and Iodine$\left(\mathrm{I}\right)$, both change from solid to gas when heated.