Topic 3-Thermal physics

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10 Terms

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Temperature
A measure of the average random kinetic energy of the particles of a substance.
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Thermal equilibrium
Two objects are in thermal equilibrium when they are at the same temperature so that there is no transfer of thermal energy between them
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\*Internal Energy of a substance
The total potential energy and random kinetic energy of the molecules of the substance.
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\*Thermal Energy (Heat) (Q)
Energy transferred between two substances in thermal contact due a temperature difference.
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specific heat capacity
 Amount of energy (joules) required to raise 1kg of a substance by one degree (Kelvin or Celcius
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Pressure
force per unit area acting on a surface
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\*Ideal Gas
a gas that has no intermolecular forces and follow the ideal gas equation pV=nrt
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Boyle’s law
The pressure of a fixed mass of gas at constant temperature is inversely proportional to its volume
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Charles Law
The volume of a fixed mass of gas at a constant pressure is directly proportional to its temperature in kelvin
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