Particle model, density, latent heat and gas pressure

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Use ρ = m/V and required practical: determine the density of regular and irregular solids (by displacement) and of liquids
Explain changes of state as reversible physical changes in which mass is conserved, and internal energy as the total kinetic and potential energy of the particles
Use E = mL for specific latent heat of fusion and vaporisation, and interpret heating and cooling curves

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Explain gas pressure in terms of particle collisions and how temperature affects pressure at constant volume; (Edexcel, OCR, HT) use pV = constant and explain why doing work on a gas raises its temperature

(Cambridge, WJEC) Describe thermal expansion and explain Brownian motion and evaporation using the particle model

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