Phase changes
Boiling
A phase transition from liquid state to the gas state, usually occurring when a liquid is heated to its boiling point.
Endothermic change
A process or chemical reaction defined by the absorption of heat.
Exothermic change
A process or chemical reaction that is defined by the release of heat.
Vaporization
A transition phase of an element or compound from liquid state to a vapor state.
Freezing
A transition phase that turns liquid into a solid when the overall temperature is lowered to its freezing point.
Heat of Vaporization
Heat absorbed when a liquid vaporizes, the quantity of heat required at a specific temperature.
Melting
Its a physical process that makes a solid substance melt into a liquid.This occurs when heat and pressure is applied to the solid.
Deposition
The direct change of a vapor to a solid by cooling the substance down, reverse of sublimation.
Pahse change
Phase Change: Evaporation, Condensation, Freezing, Melting, Sublimation & Deposition. Substances on Earth can exist in one of four phases, but mostly, they exist in one of three: solid, liquid or gas. Learn the six changes of phase: freezing, melting, condensation, vaporization, sublimation and deposition.
Sublimation
Sublimation is a type of phase just like melting, freezing,and evaporation. In sublimation a substance changes from solid to a gas without passing to a liquid phase.
Heat of Fusion
The change in enthalpy resulting in providing heat to change a substance from a solid to a liquid.
condensation
The process in which a substance in a gaseous state turns to a liquid state (kind of like rain and clouds). Its caused by the change in pressure and temperature.
Evaporation
The process of a substance in a liquid state changed to a gaseous state due to an increase of heat and temperature.
