Physics · Paper 1
Particle model of matter
Density, changes of state, internal energy, specific latent heat, particle motion and pressure in gases, and doing work on a gas.
Lessons
Ticks are remembered on this device only.
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2
Changes of state
Name the changes of state, describe how mass is conserved, and distinguish physical changes from chemical changes.
6 terms -
3
Internal energy
Explain that internal energy is the total kinetic and potential energy of the particles, and describe how heating changes it, using ΔE = mcΔθ for temperature…
6 terms -
4
Specific latent heat
Use E = mL to calculate the energy for a change of state, interpret heating and cooling graphs, and distinguish specific heat capacity from specific latent…
6 terms -
5
Particle motion and pressure in gases
Explain gas pressure using the particle model, describe how temperature and volume affect pressure, and use pV = constant.
6 terms -
6
Increasing the pressure of a gas
Explain how doing work on a gas increases its internal energy and temperature, for example in a bicycle pump (Higher tier only).
6 terms
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- Changes of state.pptx Built from the lesson script on 30 September 2026. View
- Changes of state - Completed Notes.docx The full notes for the lesson, to revise from. Built from the lesson script on 30 September 2026. View
- Changes of state - Exam Questions.docx Built from the lesson script on 30 September 2026. View
- Internal energy.pptx Built from the lesson script on 30 September 2026. View
- Internal energy - Completed Notes.docx The full notes for the lesson, to revise from. Built from the lesson script on 30 September 2026. View
- Internal energy - Exam Questions.docx Built from the lesson script on 30 September 2026. View
- Specific latent heat.pptx Built from the lesson script on 30 September 2026. View
- Specific latent heat - Completed Notes.docx The full notes for the lesson, to revise from. Built from the lesson script on 30 September 2026. View
- Specific latent heat - Exam Questions.docx Built from the lesson script on 30 September 2026. View
- Particle motion and pressure in gases.pptx Built from the lesson script on 30 September 2026. View
- Particle motion and pressure in gases - Completed Notes.docx The full notes for the lesson, to revise from. Built from the lesson script on 30 September 2026. View
- Particle motion and pressure in gases - Exam Questions.docx Built from the lesson script on 30 September 2026. View
- Increasing the pressure of a gas.pptx Built from the lesson script on 30 September 2026. View
- Increasing the pressure of a gas - Completed Notes.docx The full notes for the lesson, to revise from. Built from the lesson script on 30 September 2026. View
- Increasing the pressure of a gas - Exam Questions.docx Built from the lesson script on 30 September 2026. View
Key terms in this chapter
All 30, gathered from every lesson.
- Melting
- Solid to liquid.
- Freezing
- Liquid to solid.
- Boiling
- Liquid to gas throughout the liquid.
- Evaporating
- Liquid to gas at the surface.
- Condensing
- Gas to liquid.
- Sublimation
- Solid straight to gas.
- Internal energy
- The total kinetic and potential energy of all the particles in a system.
- Kinetic energy
- Energy of movement.
- Potential energy
- Energy stored because of forces between particles.
- Specific heat capacity
- Energy needed to raise 1 kg by 1 °C.
- Temperature
- A measure of the average kinetic energy of particles.
- System
- An object or group of objects.
- Specific latent heat
- Energy to change the state of 1 kg with no temperature change.
- Latent heat of fusion
- For solid to liquid.
- Latent heat of vaporisation
- For liquid to gas.
- Heating curve
- A temperature-time graph for a heated substance.
- Constant temperature
- Temperature that does not change during a change of state.
- Potential energy
- Energy stored due to the forces between particles.
- Pressure
- Force per unit area.
- Pascal
- The unit of pressure; one newton per square metre.
- Random motion
- Movement in any direction with no pattern.
- Fixed mass
- A sealed amount of gas with no particles added or removed.
- Compress
- Squash into a smaller volume.
- Kinetic energy
- Energy of movement.
- Work
- Energy transferred by a force.
- Internal energy
- Total kinetic and potential energy of particles.
- Compression
- Squashing a gas into a smaller volume.
- Molecule
- A group of atoms bonded together.
- Enclosed gas
- A gas trapped in a container.
- Temperature
- A measure of average kinetic energy.