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Energy Transfer 4 - Coggle Diagram
Energy Transfer 4
Energy Needed for Phase Change
If energy enters the system
Endothermic
More ordered state to less ordered state
E.g.
Sublimation
Vaporization
Fusion
*Bonus
Starch Gelatinization
If energy is released from the system
Exothermic
Less ordered to more ordered state
E.g.
Condensation
Freezing
Different Types of Phase Change
Opposite in Sign but same absolute value of energy
Pairs
1
H melting
-H freezing
2
H sublimation
-H deposition
3
H vaporization
-H condensation
Hsub=Hfus+Hvap
Q=m(delta)H
Q=heat transfer during phase change
m=mass
Delta H = enthalpy required for phase change
Heating Curve of Water
Latent Heat
During Phase change
Temperature stays constant
E.g.
Melting of Ice
Vaporization of Water
Condensation of water
Freezing
Sensible Heat
Heat of Fusion/Melting and Vaporization of Various Materials