Question

a solid turns directly into a gas and this process is known a​

Answer 1

Answer:

Sublimation is the process of transformation directly from the solid phase to the gaseous phase, without passing through an intermediate liquid phase. ... At temperatures and pressures below those of the triple point, a phase change between the solid and gas phases can take place.

Answer 2

Answer:

Sublimation. For example camphor or naphthalene they do not convert into liquid they directly convert into gas.