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Chemistry 0620

1. States of matter

The particle model of solids, liquids and gases, changes of state, and diffusion.

  1. 1.1

    Solids, liquids and gases

    Particle arrangement, motion and separation in each state, and the changes between them.

    Full lesson1 questions3 cardsSimulation
    • 1.1.1Describe the states of matter in terms of the arrangement, separation and motion of particles.
    • 1.1.2Describe changes of state and explain them using the kinetic particle model.
    • 1.1.3Explain the effects of temperature and pressure on the volume of a gas.
  2. 1.2

    Diffusion

    The movement of particles from high to low concentration, and the effect of relative molecular mass.

    Full lesson1 questions2 cardsSimulationReview first: 1.1
    • 1.2.1Describe and explain diffusion in terms of the random motion of particles.
    • 1.2.2Explain why gases with a lower relative molecular mass diffuse faster.