Unit 3 - Particles



3.1  Changes of state and the particle model


3.1.1  Density of materials



3.1.2  Changes of state




3.2  Internal energy and energy transfers


3.2.1  Internal energy



3.2.2  Temperature changes in a system and specific heat capacity



3.2.3  Changes of heat and specific latent heat




3.3  Particle model and pressure


3.3.1  Particle motion in a gas



3.3.2  Pressure in gases



3.3.3  Increasing the pressure of a gas (physics only)