What is sublimation? Give names of sublimable substances.

(N/A) Sublimation is the process in which a substance changes directly from the solid state to the vapour state without passing through the intermediate liquid state.
Conversely,the process of changing directly from vapour to solid is also often referred to as sublimation or deposition.
Examples of substances that undergo sublimation include dry ice (solid $CO_{2}$),iodine $(I_{2})$,naphthalene $(C_{10}H_{8})$,and camphor.
During the sublimation process,the solid and vapour phases of the substance coexist in thermal equilibrium at a specific temperature and pressure.