SimulateScience

Earth's AtmosphereRun time forward. Watch the carbon dioxide and oxygen. Where does the carbon dioxide go?KS3 and KS4Atom BuilderAdd or remove protons. Watch which element the atom becomes.KS3 and KS4 ChromatographyPick an ink and a solvent. Press START. Watch how many spots the ink splits into.KS3 and KS4 Fire TriangleTake away one side of the fire triangle. Watch what makes the fire go out.KS3 only Conservation of MassOpen or seal the container. Watch the mass reading while the reaction happens.KS3 and KS4 Covalent BondingPick a molecule. Watch the outer shells. Are electrons shared, or do they move across?KS4 onlyCrackingHeat the long molecules over the catalyst. What smaller molecules are made?KS4 onlyDisplacement ReactionsPick a metal and a solution. Watch: do atoms swap between the strip and the solution?KS3 and KS4DissolvingWatch the sugar crystal. Where do the sugar particles go? Does the mass change? What makes it dissolve faster?KS3 onlyDistillationHeat the salty water. Which particles reach the beaker: water, salt or both?KS3 and KS4ElectrolysisMelt the lead bromide and turn the power on. Watch which electrode each ion moves to.KS4 only Electrolysis: AqueousPick a solution. Watch which ions gain or lose electrons at each electrode, and which ions bounce back.KS4 only Elements, Compounds and MixturesAdd atoms, then make them react. Watch what the dish holds: an element, a compound or a mixture.KS3 and KS4 Exothermic and EndothermicPick a reaction. Watch the thermometer. Does the solution get hotter or colder?KS3 and KS4Dynamic EquilibriumPick a starting gas. Watch the forward and reverse rates become equal. Then change one condition. Watch the amounts move.KS4 only Extracting MetalsPick a metal oxide. Heat it with carbon. Can carbon take the oxygen away?KS3 and KS4Filtration and EvaporationGet pure salt back from rock salt. Watch which particles fit through the holes in the filter paper.KS3 only Crude Oil FractionsWatch each molecule rise up the column. On which tray does it condense?KS4 onlyGas TestsPick a test tube of gas. Try a test. What do you see, and which gas is it?KS3 and KS4Greenhouse EffectPick how much greenhouse gas is in the air. Watch the heat from the surface. How warm does the Earth get?Pick how much greenhouse gas is in the air. Watch where the infrared goes and how warm the surface gets.KS3 and KS4 Group 1: Alkali MetalsPick a metal. Drop it in water. Which metal reacts fastest?KS3 and KS4Group 7: HalogensAdd a halogen to a salt solution. Does it swap places with the halogen in the salt?KS4 onlyIonic BondingPick a metal and a non-metal. Press TRANSFER. Is the electron shared, or does it move across?KS4 onlyIsotopesPick an element. Compare its isotopes. What is the same, and what is different?KS4 onlyMetallic BondingPick what to do to the metal. Watch the delocalised electrons and the layers of ions.KS4 only Metals and AcidsPick a metal. Watch how often the H particles from the acid react with it and make hydrogen gas.Pick a metal. Watch how often H+ ions from the acid react with it and make hydrogen gas.KS3 and KS4 NeutralisationAdd alkali to the acid. Watch what happens when an H meets an O–H.Add alkali to the acid. Watch what happens when an H+ ion meets an OH− ion.KS3 and KS4 Rates: CatalystAdd the catalyst. Watch how many hits on the catalyst grains make a star.KS3 and KS4 Rates: ConcentrationPick a concentration. Watch how often H particles from the acid hit the marble chip.Pick a concentration. Watch how often H+ ions from the acid hit the marble chip.KS3 and KS4 Rates: Gas PressurePick a pressure. Watch how often H₂ and I₂ molecules collide.KS4 only Rates: Surface AreaPick a size of marble piece. Watch how much of the marble the acid can touch.KS3 and KS4 Rates: TemperaturePick a temperature. Watch how fast the H particles move and how many hits make a star.Pick a temperature. Watch how fast the H+ ions move and how many hits make a star.KS3 and KS4 The Rock CycleFollow one rock grain. Which process changes it next, and what rock does it become?KS3 onlyStructure and PropertiesPick a substance. Heat it. What has to break before it melts?KS4 onlyTesting for WaterPick a test and a liquid. Is water there? Is it pure water? Watch the colour and the temperature.Pick a test and a liquid. Does the test show water is present? Does it show the water is pure?KS3 and KS4ConductionPick a material and a length. Watch how fast thermometer C near the far end warms up.KS3 and KS4 Convection TankLight the burner. Watch the warm water. Where does it go?KS3 and KS4DensityPick a material and a mass. Drop the block. Does it float or sink in water?KS3 and KS4Distance–Time GraphsPick what the driver does. Watch how steep the distance–time line gets.KS3 and KS4 ElectromagnetsChange one thing at a time. Watch how many paperclips the electromagnet picks up.Change one thing at a time. Watch the field lines and how many paperclips it picks up.KS3 and KS4 The Electromagnetic SpectrumSlide along the spectrum. What changes: the speed, the wavelength or the frequency?KS4 onlyEnergy StoresWatch the energy bars as the skater rolls. Does the total ever change?KS3 and KS4Gas PressureChange the size or the temperature. Watch how often and how hard the particles hit the walls.KS3 and KS4 Half-LifePick an isotope and a number of nuclei. Watch the graph. Does it take the same time to halve each time?KS4 onlySprings and StretchingAdd masses one at a time. Watch how far the spring stretches for each 1 N. Then try the stiff spring.Add masses one at a time. Watch if the extension stays proportional to the force. Then compare a stiff spring.KS3 and KS4 Infrared and SurfacesTurn each face towards the detector. Watch which surface sends out the most infrared. Then change the water temperature.KS3 and KS4 Internal EnergyHold HEAT. Watch which energy store goes up: kinetic or potential.KS4 only I–V CharacteristicsChange the p.d. step by step. Watch the shape the points make on the graph.KS4 only Light and ColourPick a filter and a shirt. What colour light reaches the eye? That is the colour you see.KS3 only Pressure in LiquidsMove the box deeper. Watch the push arrows on every side. Which jet goes furthest?KS3 onlyMagnetic FieldsTap the table to place a compass. Which way does each needle point?KS3 and KS4MomentsHang weights on each side. Watch which way the plank turns. When does it stay level?KS3 onlyMomentumPick masses and velocities. Watch the total momentum. Is it the same before and after the collision?KS4 onlyMotor EffectChange the current, the magnet or the wire. Watch how far and which way the wire is pushed.KS4 only The National GridChange the transmission voltage. Watch the current and how much energy is wasted heating the cables.KS4 only Gold Foil ExperimentPick a model of the atom. Fire alpha particles at gold. How many bounce back?KS4 onlyParticle HeaterHold HEAT. Watch the thermometer and the particles. When does the temperature stop rising?KS3 and KS4Power and Energy BillsPick an appliance and a time. Watch the meter. Which costs more: high power or a long time?KS3 and KS4PressurePick the feet or the weight. Watch how deep the feet sink into the snow.KS3 only Alpha, Beta and GammaPick a radiation and an absorber. What stops each one? Watch the count rate at the detector.KS4 only ReflectionPick an angle. Read both angles from the normal. Are they the same?KS3 onlyRefractionPick an angle. Watch the ray at the edge of the block. Does the light change direction?Pick an angle. Watch the wavefronts at the edge of the block. Does the wave change direction?KS3 and KS4Resultant ForceChange the pushes. Watch the resultant force arrow. Does the box speed up, slow down or keep a steady speed?KS3 and KS4SeasonsPick a time of year. Watch which way the UK half of the Earth leans. Then take the tilt away. Are there still seasons?KS3 onlySeries and ParallelPick series or parallel, then add a lamp. Watch the ammeters. Is the current the same everywhere, or does it split?Pick series or parallel, then add a lamp. Watch what the ammeters and voltmeters read.KS3 and KS4 Loudness and PitchChange the loudness or the pitch. Watch how the trace on the screen changes.KS3 only Specific Heat CapacityAll three get the same energy. Watch which temperature rises the most. Then try 2 kg.KS3 and KS4 Static ElectricityPress RUB, then drag the balloon near the target. Watch where the − charges go.KS3 only Stopping DistancesChange one thing. Press SEE A HAZARD. How far does the car go before it stops?KS4 onlyVelocity–Time GraphsPick what the driver does. Watch if the velocity–time line slopes up, slopes down or goes flat.KS4 only Transverse and LongitudinalPick a wave type. Watch THIS COIL. Does the coil travel along, or only the energy? Then change the frequency or the amplitude.Pick a wave type. Watch the coil marked THIS COIL. Does it travel along with the wave? Then change the frequency or the amplitude.KS3 and KS4 Weight and MassPick a world. Watch the newtonmeter. Does the mass change? Does the weight change?KS3 and KS4Active TransportWatch the carrier proteins. Do mineral ions go from low to high concentration? What does it cost?KS4 onlyBlood Glucose ControlPick a person. Eat a meal. Watch if the blood glucose goes back to normal.KS4 only Breathing ModelPull the rubber sheet down. Watch the pressure in the jar and the air in the balloons.Pull the rubber sheet down. Watch the balloons. Does air go in or out?KS3 and KS4Carbon CycleTurn burning on or off. Watch how much carbon is in the air.KS3 and KS4 Cell CyclePause and count the cells in each stage. Which stage has the most cells?KS4 onlyCell StructurePick a cell. Switch the light on or off. Which parts are working, and what do they do?KS3 and KS4DiffusionChange the concentration difference, the temperature or the membrane area. Watch how fast the two sides even out.Change the difference, the temperature or the membrane area. Watch how fast the particles spread out.KS3 and KS4 DigestionSwitch the enzymes or the bile on or off. Watch which molecules pass through the gut wall into the blood.KS3 and KS4 Double CirculationFollow one cell. Count how many times it goes through the heart in one full circuit.KS3 and KS4 Enzymes, Temperature and pHPick a temperature or a pH. Watch if the enzymes still break up the substrate.Pick a temperature or a pH. Watch if the substrate still fits the active site.KS3 and KS4 Exercise and BreathingSprint, then rest. Watch the lactic acid and the heart rate after you stop.Sprint, then rest. Watch the lactic acid and the heart rate after you stop.KS3 and KS4 Food TestsPick a food and a test. Watch the colour. Is there sugar, starch, protein or fat in it?KS3 and KS4Food WebRemove one animal. Watch what happens to ALL the others, not just its predator.Remove one species. Watch the knock-on effects pass through every trophic level.KS3 and KS4 Gas ExchangeChange the blood flow, breathing, wall thickness or surface area. Watch how fast oxygen moves into the blood.Change the blood flow, breathing, wall or surface area. Watch how fast oxygen goes into the blood.KS3 and KS4 Immune ResponseInfect with the same pathogen twice. Watch how fast the antibodies and antitoxins come the second time.KS4 only Genetic InheritancePick the genes of each parent. Press BREED. Do the offspring match what you expect?Pick each parent’s genotype. Press BREED. Does the count get closer to the Punnett square?KS3 and KS4Meiosis and FertilisationPress SPLIT. Count the chromosomes in each new cell. Are the new cells the same, or different?KS4 onlyThe Menstrual CycleWatch the lining of the uterus. On which day is the egg released? When does the period start?Watch the hormone graph. Which hormone peaks just before the egg is released?KS3 and KS4Microscope MagnificationPick a lens. Watch the image get bigger. Does the real cell get bigger too?Pick a lens and measure the image. Does the real size of the cell change?KS3 and KS4Muscles and JointsPick which muscle contracts. Watch which way the forearm moves. Does any muscle push?KS3 onlyNatural SelectionLet the bacteria grow. Give a course of antibiotic. Watch which bacteria survive.KS3 and KS4 OsmosisPick how much sugar is on each side. Watch which way more water particles cross the membrane.KS4 only Photosynthesis RateMove the lamp closer or change one other thing. Watch if the pondweed makes more oxygen bubbles.Change one thing. Watch if the pondweed makes more oxygen bubbles.KS3 and KS4 Quadrat SamplingPlace quadrats and count the daisies. How close is your estimate to the true number?KS3 and KS4Reflex ArcTouch the hot object. Which happens first: the hand moves, or you feel pain?KS4 onlySelective BreedingPick which wheat plants breed. Watch the mean number of grains change over many generations.KS3 and KS4 SynapseSend an impulse. Watch how the signal crosses the gap to the next neurone.KS4 only TranspirationChange one thing. Watch how fast the air bubble moves towards the plant.KS4 only Spread and VaccinationPick how many people are vaccinated. Watch how far the pathogen spreads.KS4 only Water CyclePick how strong the Sun is. Watch how fast water moves from the sea to the air and back.KS3 and KS4

Each simulation is a model. The page says what the model leaves out. KS4 units follow the AQA GCSE Combined Science: Trilogy (8464) specification. KS3 units follow the AQA KS3 Science syllabus big ideas.

1 Key stage

2 Device

3 Subject

Chemistry

5.1Atomic structure and the periodic table

5.2Bonding, structure, and the properties of matter

5.3Quantitative chemistry

5.4Chemical changes

5.5Energy changes

5.6The rate and extent of chemical change

5.7Organic chemistry

5.8Chemical analysis

5.9Chemistry of the atmosphere

KS3 onlyYears 7 to 9. Good for revising the basics.

MatterParticles, elements, mixtures and separating

ReactionsMetals, acids, combustion and chemical energy

EarthRocks, the atmosphere and climate

GCSE only (KS4)You meet these at GCSE. They use GCSE words.

Physics

6.1Energy

6.2Electricity

6.3Particle model of matter

6.4Atomic structure

6.5Forces

6.6Waves

6.7Magnetism and electromagnetism

KS3 onlyYears 7 to 9. Good for revising the basics.

ForcesSpeed, contact forces, pressure and moments

ElectromagnetsCircuits, static and magnets

EnergyEnergy stores, costs and heating

WavesSound, light and wave properties

MatterParticle model, density and gas pressure

EarthThe universe: Earth, Sun and seasons

GCSE only (KS4)You meet these at GCSE. They use GCSE words.

Biology

4.1Cell biology

4.2Organisation

4.3Infection and response

4.4Bioenergetics

4.5Homeostasis and response

4.6Inheritance, variation and evolution

4.7Ecology

KS3 onlyYears 7 to 9. Good for revising the basics.

OrganismsMovement, cells, breathing and digestion

EcosystemsInterdependence, respiration and photosynthesis

GenesVariation, inheritance, reproduction and evolution

GCSE only (KS4)You meet these at GCSE. They use GCSE words.