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Thermal physics

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Paul Sheffield

on 12 September 2018

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Transcript of Thermal physics

Thermal physics
Kinetic model
Brownian motion
Internal energy

Do it now
What is the triple point of a substance?
What is thermal equilibrium?
What is the Zeroth rule of thermal equilibrium?
What are the fixed points of the Kelvin scale?
What is 200 degrees centigrade in Kelvin?
What is 100 Kelvin in degrees centigrade?
Solids liquids and gases
Why does Ice float?
Why is this unusual?
What is the Kinetic model?
Draw a diagram of a solid liquiand gas
Label it with the key information
Internal energy: Sum of Kinetic and potential energy
Kinetic energy of particles
Potential energy of electrostatic intermolecular forces
Brownian motion
Summary questions
Internal Energy
Increasing temperature
increases internal energy by increasing kinetic energy of particles
increases electrostatic energy between particles
Temperature does not rise when changing state as only the potential energy increases not the kinetic energy
Energy is used to break bonds.
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