Give reason for the following observations:

Naphthalene balls disappear with time without leaving any solid.

 

Answer

Naphthalene balls are volatile substances which sublime , i.e., they change from solid to gaseous state without coming into liquid state.

Hence, naphthalene balls disappear with time without leaving any solid.

 

  1. Class 9
  2. Chapter 1 Class 9 - Matter In Our Surroundings

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.