What is phase change? | Explained by Thermal Engineers

Matter exists chiefly in four forms: solid, liquid, gas, and plasma. The conversion of matter from one state to another is called a phase change. This process occurs when a large amount of energy is gained or lost. Phase change also depends on factors like pressure and temperature.Different Types of Phase ChangeA phase is a form in which a substance exists.On earth, the different states of matter are solid, liquid, gas, and plasma. Each form of matter has unique properties including specific heats, melting points, and boiling points. Under certain conditions, different phases can coexist.There are eight thermal processes through which matter can attain phase change. They are melting, freezing, evaporation, condensation, sublimation, deposition, ionization, and recombination. These eight phases exist under different temperatures and pressure conditions.Freezing:Change of a substance from liquid phase to solidMelting:Change from solid phase to liquidVaporization:Change from liquid to gas...