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GCSE Physics · key term
The lowest possible temperature: approximately , equivalent to . In the simple particle model, particles have no movement at this temperature.
Used by Edexcel
Specification 14.14, 14.15 · Paper 2
Revise: Absolute ZeroThe limit is reached when there can be no further reduction in particle movement. This lowest possible temperature is called absolute zero.
The lowest possible temperature, equal to 0 K or approximately −273 °C.
Do not confuse absolute zero with : absolute zero is approximately , or .
When explaining absolute zero, link temperature to particle movement: cooling reduces particles’ kinetic energy until, in the simple particle model, there is no movement at absolute zero.
Avoid saying that particles disappear or that there is no matter at absolute zero; it is their movement that is absent in the model.
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