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GCSE Combined Science · key term
The total kinetic and potential energy of the particles making up a system.
Used by AQA and Edexcel
Specification 6.3.2.1, 6.3.2.3 · Paper 5
The total kinetic energy and potential energy of all the particles (atoms and molecules) that make up a system.
Revise: Internal EnergyInternal energy is the total kinetic energy and potential energy of all the particles (atoms and molecules) that make up a system. Both contributions matter: internal energy is not just the energy of particle motion.
Paper 5, Paper 6
The total kinetic energy and potential energy stored by the particles in a system.
Revise: Heating, specific heat capacity and latent heatThe energy stored within its particles is called internal energy. It includes kinetic energy associated with particle movement and potential energy associated with their positions and interactions.
Define internal energy using both kinetic energy and potential energy, and include all the particles in the system.
Temperature is related to average particle kinetic energy; internal energy is the total kinetic and potential energy of all the particles.
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