Particles & Matter KS3 is a five-mission Year 7 science activity book mapped to the DfE National Curriculum for KS3 chemistry (the particulate model of matter). Learners describe the arrangement, movement and energy of particles in solids, liquids and gases, name every change of state (melting, freezing, evaporation, condensation and sublimation), use melting and boiling points, explain diffusion, gas pressure and density, and sort substances into atoms, molecules, elements, compounds and mixtures. Every question is auto-marked on screen, or the whole book can be printed with a full answer key. Includes teacher, parent and pupil notes and is fully SEND-friendly with high-contrast and large-text modes.