Question

Give reason for the following observations.
(a) Naphthalene balls disappear with time without leaving
any solid.​

Answer 1

Explanation:

Naphthalene undergoes sublimation easily i.e., the change of state of naphthalene from solid to gas without the intervention of the liquid state. Thus, naphthalene balls keep on forming naphthalene vapours which disappear into the air with time without leaving any solid.

Answer 2

Answer:

Naphthalene balls disappear with time without leaving any solid because naphthalene balls undergo sublimation easily. They directly change its state from solid state to vapour/gaseous state which means it changes form naphthalene balls to naphthalene vapour without passing through the liquid state.