Thermal physics

• Internal energy = sum of kinetic and potential energies
• Potential energy = from interactions between particles
• Kinetic =from movement between particles
• work done = pressure x volume
• 0 degrees Celsius = 273 kelvin
• Celsius = add 273
• first law of thermodynamics is the 'change of internal energy of an object = total energy transfer due to work done and heating'
• in a change in state the potential energies are changing but not the kinetic energies therefore the temperature remains constant
• temperature is the average kinetic energy of particles
• heat is the sum of kinetic energy in particles