Particles

Part of Combined Science

  • Particles

    • The particle model - OCR Gateway

      Kinetic theory models the arrangement and movement of particles in solids, liquids and gases. It explains properties of substances in these different states, and what happens during changes of state.

    • Interactive activity: Changes of state - OCR Gateway

      Want to know what happens when materials melt, evaporate and boil? Find out with this interactive activity for the GCSE OCR Gateway combined science specification.

    • Atomic structure - OCR Gateway

      Atoms consist of a nucleus containing protons and neutrons, surrounded by electrons in shells. The numbers of particles in an atom can be calculated from its atomic number and mass number.

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