The change of state is called sublimation.
The change of state is called sublimation.
it's called sublimation
Sublimation - the process by which a substance goes directly from the solid to the gaseous state without passing through the liquid state.
sublimation
Sublimationis the process of transition of a substance from the solid phase to the gas phase without passing through an intermediate liquid phase. Sublimation is an endothermic phase transitionthat occurs at temperatures and pressures below a substance's triple point
vaporization
sublimation
Sublimation of any pure substance such as ammonium chloride by definition is a physical change, because sublimation is defined as passage of substance from the solid to the gas phase without passing through an intermediate liquid phase.
Sublimation
Chemical change
a physical change
Sublimation, per se, does not involve any chemical reactions. It is simply a physical change of a substance going from a solid to a gas without passing through the liquid phase.