Karteikarten
Ohne Titel
Karten in diesem Stapel (45)
- 1worktransfer of energy
- 2closed systemenvironment cannot contribute matter to it
- 3isolated systemenvironment cannot contribute either matter or energy to it
- 4molecular level random motionTemperature T (kelvins)
- 5HeatQ
- 6Heattransfer of thermal energy (joules)
- 7Q> 0energy into the system
- 8Q<0energy out of the system
- 9thermal energyextensive (depends on amount)
- 10temperatureintensive property (does not depend on the amount of the substance)
- 11temperaturestate variable
- 12zeroth law of thermoequal heat transfer between objects of same temp (not net heat transfer)
- 13movement of thermal energy form one point to anotherconduction
convection
radiation - 14conductiontransfer of thermal energy (stove to yr hand)
- 15state variablestemperature, pressure, volume, moles, entropy
- 16conductionatoms of hot skillet bump into atoms of hand making them vibrate more and heating them up
- 17conduction raterate at which materials conduct heat
- 18convectionthink candle
- 19convectionheat transferred away from the flame
air around flame warms, expands, become less dense than the cooler surrounding air - 20radiationabsorption of energy of light waves
- 21first law of thermototal energy of universe constant
- 22delta E = Q-Wq positive when heat into system
w negative when work done by the environment on the system - 23ideal gas sealed in container with piston on topKE=PE=0
only form of energy is thermal energy
einternal = ethermal
E=Q-W - 24piston problemE=Q-W
E = work by system
W = heat out of system - 25pistoninternal energy proportional to temp
- 26pistonW=PdeltaV
w=pressure x change in volume - 27isobaricconstant pressure
w=pv - 28isochoricconstant volume
W=o
E=Q - 29isochoricno work done
- 30isothermal processheat allowed to pass between system and environment so temperature remains constant (P and V because indirectly proportional)
E=o and Q=W - 31adiabaticne heat transferred (can still have change in temp)
E=-W - 32constant pressurerequires more heat for an equal change in temp that constant volume
- 33E=Q-PVisboaric is e=q+pv
- 34Cp=Cv+Radgasdgsdt
- 35clockwise graphheat to work
- 36free expansionconstant pressure then release it (remove the piston suddenly)
no work done - 37entropymeasure of disorder
- 382nd law of thermoentropy of an isolated system either stays the same of incrases
- 39if entropy remains same through a thermodynamic cycleit is reversible
- 40in real worldthermodynamic processes are irreversible
- 411 m^3= 1000 liters
- 42pascalJ/m^3
- 43PV diagramif you return to same spot all the state variables return to original value
- 44entropystate variable
- 45Pv=nRTideal gas law
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- MCAT Physics (Chapter 7) Karteikarten am Ohne Titel, erstellt von Steve G am 28/06/2016.
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- Steve G
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