Particles

Part ofChemistry (Single Science)

  • Particles

    • 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.

    • Changes of state: interactive activity - OCR Gateway

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

    • Sample exam questions - OCR Gateway

      Understanding how to approach exam questions helps to boost exam performance. Question types will include multiple choice, structured, mathematical and practical questions.

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