Question

naphthalene balls disappear with time without leaving any solid ! how ? explain ?

Answer 1

Your answer is ,
Napthalene balls are solid in state but as they react with the air they disappear ( Turn into Gas ) so they don't leave behind any solid !
This property of a solid directly turning into gas without turning into liquid is called sublimation !

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Answer 2

Hey!!
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◾The Reason is that Napthalene balls are Sublime ..

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✔What is Sublimation ?

◾The process of conversion of a Šolid directly to Gas without converting to a liquid is known as Sublimation .

◾ The substances that show the property of Sublimation are Called Sublime Solids .

◾Napthalene is one such Sublime Solid. so when kept out , it slowly changes to gaseous state hence , disappearing without leaving any residue...!!


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