Particle Model of Matter

1 Density of Materials Define density and calculate it from mass and volume for solids and liquids. Spec 6.3.1.1 2 Changes of State Describe changes of state in terms of particles and explain why mass is conserved. Spec 6.3.1.2 3 Internal Energy Define internal energy and explain how heating affects a system. Spec 6.3.2.1 4 Temperature Changes and Specific Heat Capacity Use ΔE = mcΔθ to calculate energy changes when substances are heated or cooled. Spec 6.3.2.2 5 Changes of State and Specific Latent Heat Define specific latent heat and calculate energy for changes of state using E = mL. Spec 6.3.2.3 6 Particle Motion in Gases Explain gas pressure in terms of particle motion and describe how temperature and volume affect pressure. Spec 6.3.3.1