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Thermal Physics - Coggle Diagram
Thermal Physics
Evaporation
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It causes cooling
eg. perfume, swimming and coming out afterwards and fridge
Evaporation:
-Occurs at any temperature
-Relatively slow
-Takes place only at the surface of the liquid
-No bubbles are formed
-Temp may change
-External thermal energy not needed
Boiling:
-Occurs at a particular temp
-Relatively fast -Takes place throughout the liquid
-Bubbles are formed
-Temp remains constant
-External thermal energy needed
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Internal energy
-Unit in joule
-The particles in a substance are in continuous motion and attractive forces exist between these such as intermolecular bonds
Internal potential energy
-Due to stretching of bonds as particles move
-Potential energy between the particles depends on forces between them and how far apart they are
Internal kinetic energy
-Due to motion of particles
-Directly related to temperature- the higher the temperature, the more vigorous the motion of particles
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Boiling and condensation
Boiling
-No change in temperature
-Definite temp for pure substances
-Energy is absorbed to break down forces of attraction between particles and only internal KE is changed.
Condensation
-No change in temp
-Definite temp for pure substances
-Energy is released to form strong forces of attraction and only internal KE is changed.
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