1. Biology—digestive system organs and enzymes, photosynthesis limiting factors, aerobic/anaerobic respiration, food chains/webs, variation (inherited/environmental), reproduction types, genetic diagrams 2. Chemistry—reactions of metals and acids, displacement, pH scale and indicators, combustion, neutralisation, corrosion, reactivity series, chemical symbols and formulae 3. Physics—forces (balanced/unbalanced), motion (speed, time, distance), Sankey diagram interpretation, reflection/refraction, light ray diagrams, pressure and force, Hooke’s law 4. Earth Science—rock cycle, acid rain effects, renewable/non-renewable energy, lichen as air quality indicators, weathering and erosion 5. Scientific method—dependent/independent/control variables, graph plotting, experimental improvement, anomaly identification, data interpretation, fair test requirements