011-40705070  or  
Call me
Download our Mobile App
Select Board & Class
  • Select Board
  • Select Class
Anwesha Dash from APEX ENGLISH MEDIUM SCHOOL, asked a question
Subject: Science , asked on 5/8/14

why do napthalene balls disappear after some time ?

Rishi Verma From Lancer's Convent Sr Sec School, added an answer, on 12/6/12
74 helpful votes in Science

napthalene has a property to sublime. these balls turn into vapour because the intermolecular force is very weak.

  • Was this answer helpful?
  • 2
100% users found this answer helpful.
View More 6 Answer
Raima Sinha From Kendriya Vidyalaya, added an answer, on 12/6/12
130 helpful votes in Science
This is due to the property of sublimation. Some solids do not exist in their liquid form; instead they directly evaporate from their vapour forms. Naphthalene is among those solids that show the property of sublimation.
So naphthalene balls disappear after some time due to the property of sublimation.

  • Was this answer helpful?
  • 1
100% users found this answer helpful.
Shrishti From B.r.d.a.v Public School, added an answer, on 5/8/14
2 helpful votes in Science

due to sublimination

  • Was this answer helpful?
  • 1
100% users found this answer helpful.
Saransh Anand From Kendriya Vidyalaya No 1, added an answer, on 5/8/14
84 helpful votes in Science

Naphthalene undergoes sublimation easily i.e., the change of state of naphthalene from solid to gas takes place easily. Thus, naphthalene balls disappear with time without leaving any solid.Following things also show this property:-

1)AMONIUM CHLORIDE

2)IODINE

3)CAMPHOR

  • Was this answer helpful?
  • 0
Aaliya , added an answer, on 12/6/12
69 helpful votes in Science

AS NAPHTHALENE BALLS HAV THE TENDENCY OF SUBLIMING WEN EXPOSED TO ATMOSPHERE THEY DISAPPEAR AFTER SUM TYM.

  • Was this answer helpful?
  • 0
Atul Singh From D A V Kapil Dev Public School, added an answer, on 12/6/12
1 helpful votes in Science

 because it directly change into gas

  • Was this answer helpful?
  • 0
Bhavesh Dhakad , added an answer, on 18/8/13

This is due to the property of sublimation. Some solids do not exist in their liquid form; instead they directly evaporate from their vapour forms. Naphthalene is among those solids that show the property of sublimation.So naphthalene balls disappear after some time due to the property of sublimation.

  • Was this answer helpful?
  • 0

Add an Answer