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Internal energy, particle motion and gas pressure · GCSE Physics · Courselo

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GCSE Physics
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Particle model and thermal physics

Internal energy, particle motion and gas pressure

Particle model and thermal physics · Lesson 2 of 4

Lesson 2 of 4

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Unit 4

Particle model and thermal physics

4 lessons · 6 h of study

Density, pressure and changes of state1 h 15 min of study
Internal energy, particle motion and gas pressureReading · 0%
Specific heat capacity, latent heat and heating curves1 h 45 min of study
Thermal expansion, gas laws and the kinetic model1 h 30 min of study

This unit is ≈10% of the GCSE Physics, across 4 lessons. Full syllabus

Lesson 2 of 4 · Particle model and thermal physics

Internal energy, particle motion and gas pressure

3 quick checks≈2% of the testCore: Core: tested on most papers

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By the end you’ll be able to

define internal energy as the total kinetic energy and potential energy of the particles in a system
explain how heating changes the energy stored in a system and distinguish between increases in particle kinetic energy and changes in particle potential energy
relate temperature to the average kinetic energy of particles

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Adaptive questions on internal energy, particle motion and gas pressure.

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explain gas pressure in terms of particles moving randomly and colliding with the walls of a container

predict and explain how increasing the temperature of a fixed mass of gas in a fixed volume changes the pressure

predict and explain how changing the volume of a gas changes the pressure, using particle collisions and spacing

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PreviousDensity, pressure and changes of state Next lessonSpecific heat capacity, latent heat and heating curves