Question

Napthalene balls disappear without leaving behind any residue. what is this conversion known as?

Answer 1

it is noticed that this naphthalene balls disappear with time without leaving behind residue this is because naphthalene balls undergoes sublimation naphthalene balls keeps on forming in vapours slowly which disappear into the air .sublimation sublimation is the process of changing solid directly into vapour on heating and of vapours into solid on cooling is known as sublimation that's why the naphthalene balls disappear with time without leaving any Residue .

Answer 2

Napthalene balls disappear without leaving behind any residue, this conversion known as sublimation.

Explanation:

• Naphthalene balls disappear with time without leaving any solid because they undergo sublimation.
• Sublimation means directly change into vapour without passing through the liquid state.
• Thus, naphthalene balls keeps on forming naphthalene vapours which disappear into the air with time without leaving any solid.
• Naphthalene balls, also known as moth balls or camphor balls, are spherical pieces of a white solid material containing at least 98 percent naphthalene.
• They were widely used to repel moths and cockroaches and as deodorants for urinals and bathrooms.

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1.Naphthalene balls disappear with time without leaving any solid residue

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