Thermal Physics
- Created by: Hannah Cox
- Created on: 11-05-15 18:55
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- Thermal Physics
- Specific heat capacity
- 109: recognise and use the expression
- units of SHC = Jkg-1K-1
- A property of a material
- Defined as the amount of energy needed to raise the temperature of 1kg of a substance by 1K
- 109: recognise and use the expression
- Internal energy
- 110: explain the concept of internal energy as the random distribution of potential and kinetic energy amongst molecules
- 112: recognise and use the expression
- average kinetic energy of any molecule in a gaseous sample is proportinal to the absolute temp of the gas
- sum of kinetic and potential energies of all molecules in a substance
- randomly distributed according to the Maxwell-Boltzmann distrubtion
- Absolute zero
- 111: explain the concept of absolute zero and how the average kinetic energy of molecules is related to the absolute temperature
- molecules not moving at all, all ke removed
- conversion: Celsius to Kelvin add 273, Kelvin to Celsius minus 273
- Ideal gases
- 113: use the expression for the equation of state for an ideal gas
- Ideal gas molecules have 0 size, have no energy losses in collisions and exert no forces on eachother (except during collisions)
- Gas laws
- Boyle's Law:
- Charles's Law:
- Pressure Law:
- 113: use the expression for the equation of state for an ideal gas
- Specific heat capacity
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