Naphthalene balls disappear over a period of time, without leaving beh

1.	Naphthalene balls disappear over a period of time, without leaving behind any solid particles.
Answer» i. Naphthalene balls sublimate at room temperature. ii. All its molecules go into vapour phase without changing into liquid. iii. This process takes place when naphthalene balls absorb heat energy from the surrounding, which occurs slowly but continuously. Hence, naphthalene balls disappear over a period of time, without leaving behind any solid particles.

Naphthalene balls disappear over a period of time, without leaving behind any solid particles.

Answer»

i. Naphthalene balls sublimate at room temperature.

ii. All its molecules go into vapour phase without changing into liquid.

iii. This process takes place when naphthalene balls absorb heat energy from the surrounding, which occurs slowly but continuously.

Hence, naphthalene balls disappear over a period of time, without leaving behind any solid particles.