Question

What do you mean by sublimation? Explain with suitable examples. Write the properties of these substances.

(water, glass, chalk, iron ball, sugar, salt)

Answer 1

Sublimation is the change of solid directly into the gaseous-state, without going through the liquid state.

Examples of sublimation:- dry ice, moth balls or naphthalene balls, camphor.

The properties of the given substances are.

Substance	State	Properties
1. Water	Liquid	Fluidity, density, solubility, transparency, thermal conductivity.
2. Glass	Solid	Brittleness, hardness, density, transparency.
3. Chalk	Solid	Brittleness, density.
4. Iron ball	Solid	Hardness, density, malleability, ductility, electrical ductility, conductivity, thermal conductivity, luster, sonority.
5. Sugar	Solid	Brittleness, density, solubility.
6. Salt	Solid	Brittleness, density, solubility