3 Particle model of matter ########################## Changes of state and particle model *********************************** Density of materials ==================== Fluff Changes of state ================ Fluff Internal energy and energy transfers ************************************ Internal energy =============== Fluff Temperature changes in a system and specific heat capacity ========================================================== Fluff Changes of state and specific latent heat ========================================= Fluff Particle model and pressure *************************** Particle motion in gases ======================== Fluff Pressure in gasses ================== Fluff Increasing the pressure of a gas ================================ Fluff