Body systems, the circulatory system, blood pressure, respiration, effects of exercise, anaerobic respiration, balanced diets, body-mass index, protein, eating disorders, the digestive system, enzymes, diseases, pathogens, our defences against pathogens, antibodies, white blood cells, natural and ac ...more

Body systems, the circulatory system, blood pressure, respiration, effects of exercise, anaerobic respiration, balanced diets, body-mass index, protein, eating disorders, the digestive system, enzymes, diseases, pathogens, our defences against pathogens, antibodies, white blood cells, natural and active immunity, immunisation, antibiotics, neurones, the nervous system, receptors, voluntary and reflex actions, the eye, drugs, drug classifications, alcohol, tobacco, homeostasis, temperature control, hormones, diabetes, the menstrual cycle, cells, genes, DNA, variation, inheritance of sex, monohybrid inheritance, inherited diseases, mutations....hide

Ecosystems, sampling the population, classifying organisms, variation, similar species, photosynthesis, limiting factors, uses of glucose, respiration, competition, food chains, predators and prey, interdependent relationships, adaptation, evolution, natural selection, population and pollution, ozon ...more

Ecosystems, sampling the population, classifying organisms, variation, similar species, photosynthesis, limiting factors, uses of glucose, respiration, competition, food chains, predators and prey, interdependent relationships, adaptation, evolution, natural selection, population and pollution, ozone, global warming, the greenhouse effect, pollution indicators, sustainable development, extinct and endangered species....hide

Animal cells, DNA, making proteins, making DNA copies, DNA fingerprinting, enzymes, diffusion in animals and plants, single celled organisms, four parts of blood, haeomglobin, the double circulatory system, the heart, heart disease, mending the heart, mitosis and meoisis, sexual reproduction, plant ...more

Animal cells, DNA, making proteins, making DNA copies, DNA fingerprinting, enzymes, diffusion in animals and plants, single celled organisms, four parts of blood, haeomglobin, the double circulatory system, the heart, heart disease, mending the heart, mitosis and meoisis, sexual reproduction, plant cells, cell growth, stem cell research, human development, plant hormones, selective breeding, genetic engineering, cloning plants and animals....hide

Photosynthesis, plant structure, leaf structure, typical plant cells, osmosis, transpiration, water loss from plants, turgor pressure, osmosis in animal cells, xylem and phloem, measuring the rate of transpiration, plant minerals, active transport, food chains, pyramids of number, pyramids of biomas ...more

Photosynthesis, plant structure, leaf structure, typical plant cells, osmosis, transpiration, water loss from plants, turgor pressure, osmosis in animal cells, xylem and phloem, measuring the rate of transpiration, plant minerals, active transport, food chains, pyramids of number, pyramids of biomass, energy flow in a food chain, biomass, hydroponics, food webs, biological pest control, accumulation of pesticides, the carbon cycle, decay, the nitrogen cycle....hide

The skeletal system, bone structure, damaging bones, types of joint, joint movement, the knee, replacing joints, the circulatory system, the heart, the double circulatory system, circulation in other animals, arteries and veins, the effect of exercise, heart rate, pacemakers, monitoring heart rate, ...more

The skeletal system, bone structure, damaging bones, types of joint, joint movement, the knee, replacing joints, the circulatory system, the heart, the double circulatory system, circulation in other animals, arteries and veins, the effect of exercise, heart rate, pacemakers, monitoring heart rate, repairing damaged hearts, heart transplants, heart disease, the four parts of blood, blood clotting, blood types, gas exchange in animals and fish, the respiratory system, breathing, lung capacity, diffusion in the lungs, cleaning our lungs, cilia, excreting waste products, the kidney, ultrafiltration, controlling water content, dialysis, kidney transplants, male and female reproductive systems, the menstrual cycle, fertility, IVF, foetal scanning, replacing body parts, plant growth, meristems, human growth, life expectancy....hide

Atomic structure, elements and compounds, formulae, balancing equations, cooking food, additives, emulsifiers, active packagaing, perfumes, solvents, making a solution, fossil fuels, crude oil, fractional distillation, intermolecular forces, hydrocarbons, cracking, alkanes and alkenes, polymerisatio ...more

Atomic structure, elements and compounds, formulae, balancing equations, cooking food, additives, emulsifiers, active packagaing, perfumes, solvents, making a solution, fossil fuels, crude oil, fractional distillation, intermolecular forces, hydrocarbons, cracking, alkanes and alkenes, polymerisation, man-made fibres, structure of plastics, disposal of plastics, factors concerning choosing fuels, combustion of fuels, incomplete combustion, exothermic and endothermic reactions, energy changes....hide

Chemical formulae, naming compounds, balancing equations, paint, limestone, composite materials, the structure of the Earth, plate movements, constructive plate margins, subduction, tectonic theory, continental drift, using copper, alloys, smart alloys, rusting, using materials, recycling, the Earth ...more

Chemical formulae, naming compounds, balancing equations, paint, limestone, composite materials, the structure of the Earth, plate movements, constructive plate margins, subduction, tectonic theory, continental drift, using copper, alloys, smart alloys, rusting, using materials, recycling, the Earth's atmosphere, pollution, carbon dioxide balance, rates of reaction....hide

Elements and compounds, chemical formulae, balancing equations, the structure of the atom, mass and atomic number, isotopes, electron structure, ionic bonding, the periodic table, covalent bonding, the alkali metals, flame tests, the noble gases, halogens, trends in group 1 and 7, electrolysis of su ...more

Elements and compounds, chemical formulae, balancing equations, the structure of the atom, mass and atomic number, isotopes, electron structure, ionic bonding, the periodic table, covalent bonding, the alkali metals, flame tests, the noble gases, halogens, trends in group 1 and 7, electrolysis of sulfuric acid, testing for hydrogen and oxygen, extracting aluminium, the transition metals, thermal decomposition, metals and their properties, superconductors....hide

Acids and bases, neutralisation reactions, making salts, sulphuric acid, atomic mass, relative formula mass, calculating the mass of a product, percentage yield, fertilisers, eutrophication, percentage mass, reversible reactions, the Haber Process, washing powder, washing up liquid, how detergents w ...more

Acids and bases, neutralisation reactions, making salts, sulphuric acid, atomic mass, relative formula mass, calculating the mass of a product, percentage yield, fertilisers, eutrophication, percentage mass, reversible reactions, the Haber Process, washing powder, washing up liquid, how detergents work, batch and continuous processes, making new medicines, forms of carbon, nanoscience, purifying water, pollutants in water, using seawater....hide

Atomic mass revision, molar calculations, conservation of mass, calculating the mass of a product, empirical formulae, electrolysis, purifying copper, electrolysis of aqueous solutions, concentration, RDA vlaues, calculating concentrations, titration, using the correct indicator, pH curves, collecti ...more

Atomic mass revision, molar calculations, conservation of mass, calculating the mass of a product, empirical formulae, electrolysis, purifying copper, electrolysis of aqueous solutions, concentration, RDA vlaues, calculating concentrations, titration, using the correct indicator, pH curves, collecting gases, measuring the mass of a gas, rates of reaction graphs, reversible reactions, the contact process, acids and bases, electrolysis of acids, strengths of acids, precipitation reactions, testing precipitates....hide

Testing for hydrogen and oxygen, reacting oxygen and hydrogen, fuel cells, rusting, how to prevent rust, redox reactions, the reactivity series, displacement reactions, alcohols, making ethanol, fermentation, testing for chlorine, electrolysis of brine, electrolysis equations, the ozone layer, hard ...more

Testing for hydrogen and oxygen, reacting oxygen and hydrogen, fuel cells, rusting, how to prevent rust, redox reactions, the reactivity series, displacement reactions, alcohols, making ethanol, fermentation, testing for chlorine, electrolysis of brine, electrolysis equations, the ozone layer, hard and soft water, limescale, measuring and removing water hardness, vegetable oils, healthy and unhealthy oils, saturated and unsaturated fats, emulsions, saponification, analgesics, aspirin....hide

Heat and temperature, specific heat capacity, latent heat, conduction, convection and radiation, house insulation, efficiency, the electromagnetic spectrum, refraction, total internal reflection, optical fibres, analogue and digital signals, using microwaves and radiowaves, types of wave, the wave e ...more

Heat and temperature, specific heat capacity, latent heat, conduction, convection and radiation, house insulation, efficiency, the electromagnetic spectrum, refraction, total internal reflection, optical fibres, analogue and digital signals, using microwaves and radiowaves, types of wave, the wave equation, phase difference, the structure of the Earth, seismic waves, global warming, ozone....hide

Wind power, solar energy, power stations, generating electricity, fuels, nuclear power, the National Grid, efficiency, pollution, renewable and non-renewable fuels, the cost of electricity, power calculations, radioactivity, background radiation, blocking radiation, disposing of radioactive material ...more

Wind power, solar energy, power stations, generating electricity, fuels, nuclear power, the National Grid, efficiency, pollution, renewable and non-renewable fuels, the cost of electricity, power calculations, radioactivity, background radiation, blocking radiation, disposing of radioactive materials, ionisation, uses of each type of radioactivity, comparing magnets and solenoids, the Earth's magnetic field, solar flares, the solar system, orbits, comets, asteroids, space travel, Near Earth Objects, red shift, the life and death of a star....hide

Centripetal force and orbits, orbit times, artificial satellites, gravity, comets, speed calculations, circular motion, equations of motion, vectors, projectile motion, Newton's third law, momentum, the principle of the conservation of momentum, radio waves in space, diffraction of radio waves, tran ...more

Centripetal force and orbits, orbit times, artificial satellites, gravity, comets, speed calculations, circular motion, equations of motion, vectors, projectile motion, Newton's third law, momentum, the principle of the conservation of momentum, radio waves in space, diffraction of radio waves, transmitting radio waves, refraction through a glass block, critical angle, refractive index, interference of sound waves, interference of light waves, two slit interference patterns, polarisation, converging and diverging lenses, ray diagrams, magnification of lenses....hide

Circuit symbols, basic ideas of electricity, resistance, current-voltage graphs, LDRs, thermistors, potential dividers, comparing magnets and solenoids, magnetic fields around wires, coils and solenoids, the motor effect, Fleming's Left Hand rule, electric motors, electromagnetic induction, DC gener ...more

Circuit symbols, basic ideas of electricity, resistance, current-voltage graphs, LDRs, thermistors, potential dividers, comparing magnets and solenoids, magnetic fields around wires, coils and solenoids, the motor effect, Fleming's Left Hand rule, electric motors, electromagnetic induction, DC generators, AC generators, transformers, the National Grid, diodes, full wave rectification, capacitors, charge and discharge graphs, smoothing, logic gates, relays, latch circuits....hide