Question

the size of the naphthalene ball decreases when left open for a while. Why?

Answer 1

Answer:

✨✨ SUBLIMATION ✨✨

EXTRA INFORMATION :

Sublimation is the process of conversion of solid to gas directly.Naphthalene ball undergoes sublimation and hence it's size decreases over a course of time.

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Answer 2

Here is the answer to your question!

The size of the Naphthalene ball decreases when left for a while because;

Naphthalene is a volatile solid; therefore it changes into vapour when kept outside.

Thus it's size decreases.

It changes into vapour completely and leaves no solid.

Sublimation of naphthalene occurs.

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