Sublimation
soild
That is called sublimation.
gas
gas
sublimation
Solid
yes.
It is a solid
"sublimation"
It is a solid.
The point at which a liquid becomes a gas is the boiling point. The point at which a gas becomes a liquid is still called the boiling point. A solid going straight to gas without passing through a liquid state is called sublimation. Dry Ice solid CO2 is a substance that that sublimes.
A gas turning into a liquid is called condensation.