Question

Explain the change of phase from solid to liquid and liquid to gas(3m)​

Answer 1

The process by which a substance changes from the solid phase to the liquid phase is known as melting. The process by which a substance changes from the liquid phase to the solid phase is known as freezing. The process by which a substance changes from the liquid phase to the gaseous phase is known as evaporation.

Answer 2

Answer:

Phases and Phase Transitions

Phase Transition Change of Enthalpy

Vaporization (liquid to gas) ΔH > 0; enthalpy increases (endothermic process)

Sublimation (solid to gas) ΔH > 0; enthalpy increases (endothermic process)

Freezing (liquid to solid) ΔH < 0; enthalpy decreases (exothermic process)