Question

Give reasons for the following camphor disappears without leaving any residue sponge is compressible though it is solid

Answer 1

Camphor is a sublime matter. Hence it evaporates leaving no residue when left open or heated. Sublimation is a process where an object changes its states directly from solid to gas or vice versa.

Answer 2

camphor disappears after sometime as its surface gains kinetic energy and gets directly converted into gas. The process of getting converted directly into gas without getting converted into liquid is called sublimation. So, we can say that camphor due to sublimation gets converted into gas and gets disappear after sometime.