Two fully resourced lessons on kinetic theory and mixtures for middle school which use the particle model to explain states of matter (phase change) and change of state to solutions, dissolving, saturated solutions and solubility curves. What’s CoveredIdentifies the three states of matter as solid, liquid and gasDemonstrates the arrangement of particles in solids, liquids and gasesExplains the properties of solids, liquids and gases in terms of the arrangement of their particlesExplains change