Phase Changes Flashcards
It is the Transformation of matter from one state to another that involves the absorption or evolution of heat
Phase Changes
Type of reaction where energy is being absorbed from the surrounding into the system
Endothermic reaction
Type of reaction where energy is released from the system to its environment
Exothermic Reaction
It is the graphical representation of the physical states of a substance under different conditions of temperature and pressure
Phase Diagram
a diagram shows the stable states of a system in equilibrium. thede are areas that are marked solid, liquid, and vapor.
The Three Areas
the line that divides the solid and liquid phase, and represents melting and freezing points
Green Line
The curve that describes the equilibrium between solid and liquid
Melting/freezing curve
the line that divides the liquid and gas phase and represents vaporization and condensation. also shows the equilibrium of liquid and vapor
Blue Line
the point in a phase diagram at which the three states of matter coexist
Triple Point
this point terminates the liquid/gas phase line.
Critical point
set of temperature and pressure on a phase diagram where the liquid and gaseous phases of a substance merge together into a single phase.
Critical point
This curve shows the transformation of matter from solid to liquid to gas when heat is absorbed by the system
Heating Curve
