Changes of state—between solid, liquid, and gas—arephysical changes, meaning no chemical changes are takingplace. These changes are related to temperature (andpressure) and are reversible. A pure substance, containingonly one element or compound, is a solid below its meltingpoint, a liquid at temperatures between its melting andboiling point, and a gas above its boiling point.

The change in state from a solid to a liquid

he Process By Which Solid Change Directly To Gaseous State Without Undergoing The Liquid State Is

If the chemical properties of a substance remain unchanged and the appearance or shape of an substance changes it is called a

What's the name for the temperature at which a substance changes state from a liquid to a gas?

What is the term for the change of a substance from a gas directly to a solid without passing through the liquid state?