The particle model

Matter is made up of small particles called atoms. Atoms can exist on their own or together as molecules. Atoms are very small and around 100,000,000 of them side by side would measure 1 centimetre.

This interactive quiz is suitable for GCSE physics students studying density, volume and investigating density.

Changes in a material's temperature or state of matter are caused by changes to the internal energy. The energy required by different materials depends on their 'heat capacity' and 'latent heat'.

This interactive quiz is suitable for GCSE physics students studying states of matter, internal energy, energy and temperature, specific heat capacity and specific latent heat.

See what happens when states of matter change with this interactive activity designed to boost your understanding of the GCSE Edexcel physics specification.

Gases take up more space than solids or liquids and their particles are moving much faster. The temperature, pressure and volume of gases are all related.

This interactive quiz is suitable for GCSE physics students studying particle motion, gas pressure and temperature, gas pressure and volume and changing gas pressure - Higher.

Understanding how to approach exam questions helps boost exam performance. Questions will include multiple choice, descriptions and explanations, using mathematical skills and extended writing.