All questions – choose your own topic Choose the number of questions you want from each topic General knowledge Select number of questions: (81 questions available) Acids and alkalis Select number of questions: (41 questions available) Separating mixtures solutions Solubility, solutions, saturated solution, effect of temperature, filtration, evaporation, simple distillation, factional distillation, soluble, insoluble, solute, solvent Select number of questions: (27 questions available) Properties of materials. Select number of questions: (17 questions available) Elements and Compounds Metals and non-metals, Atoms and molecules Select number of questions: (39 questions available) Investigations and apparatus Select number of questions: (17 questions available) The air and Earth Select number of questions: (30 questions available) Useful reactions and equations Types of chemical change: decomposition, oxidation, burning preparation of co2, H2 and O2 Word equations Select number of questions: (26 questions available) Effects of heat on a chemical Select number of questions: (21 questions available) Burning magnesium Select number of questions: (7 questions available) Plants-feeding and structure Select number of questions: (22 questions available) Plants-reproduction Select number of questions: (24 questions available) Cells Select number of questions: (18 questions available) Classification Select number of questions: (24 questions available) Ecology Select number of questions: (21 questions available) Human biology-circulation and respiration Select number of questions: (18 questions available) Human biology-food and digestion Select number of questions: (16 questions available) Human biology-skeleton and organs Select number of questions: (38 questions available) Human biology-reproduction Select number of questions: (24 questions available) Microorganisms Select number of questions: (11 questions available) Force and pressure Select number of questions: (22 questions available) Springs and moments Select number of questions: (7 questions available) Sound and light Select number of questions: (25 questions available) Energy Select number of questions: (22 questions available) Electricity and Circuits Select number of questions: (28 questions available) The Earth in Space Select number of questions: (36 questions available) Magnets and magnetism Select number of questions: (10 questions available) Measurement and Units Select number of questions: (8 questions available) KS2 Select number of questions: (1 questions available) Solids Select number of questions: (23 questions available) Mass Select number of questions: (24 questions available) Speed Select number of questions: (5 questions available)