Skip to content
Get started
Physics 0625

2. Thermal physics

The particle model of matter, temperature and thermal expansion, and the three ways thermal energy moves.

  1. 2.1

    Kinetic particle model of matter

    States of matter, particle arrangement and motion, changes of state, gas pressure and the gas laws.

    Full lesson1 questions3 cardsSimulation
    • 2.1.1Describe the arrangement, separation and motion of particles in solids, liquids and gases.
    • 2.1.2Explain changes of state and evaporation in terms of particle behaviour.
    • 2.1.3Explain gas pressure in terms of collisions of particles with the container walls.
    • + 1 more objectives
  2. 2.2

    Thermal properties and temperature

    Thermal expansion, thermometers, specific heat capacity and specific latent heat.

    Full lesson3 questions1 cardsReview first: 2.1
    • 2.2.1Describe thermal expansion of solids, liquids and gases and give everyday consequences.
    • 2.2.2Recall and use E = mcΔθ for specific heat capacity.
    • 2.2.3Describe melting, boiling and condensation in terms of latent heat.
  3. 2.3

    Transfer of thermal energy

    Conduction, convection, radiation, and how to reduce or increase energy transfer.

    Full lesson2 questions2 cardsReview first: 2.1
    • 2.3.1Describe conduction in terms of particle vibration and free electrons.
    • 2.3.2Explain convection in terms of density changes in a fluid.
    • 2.3.3Describe how emission and absorption of infrared radiation depend on surface colour and texture.