Built for curious minds
Science makes sense when you can see it move.
Explore 18 interactive Physics, Chemistry and Biology simulations made for GCSE and IGCSE revision. Change the variables, test your predictions and learn by doing.
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- Works in your browser
6 simulations
Forces, energy, waves, electricity and matter.
6 simulations
Particles, reactions, analysis and energetics.
6 simulations
Cells, organisms, genetics and life processes.
Simulation library
Choose an experiment
Every simulation includes live controls, visual feedback and concise curriculum-aligned explanations.
Atomic Structure
Build atoms and explore electron shells, subatomic particles, ions and isotopes.
Chromatography
Separate mixtures, watch pigments travel and calculate Rf values from your results.
Diffusion
See particles move down a concentration gradient and test what changes the rate.
Electrical Circuits
Build series and parallel circuits, then measure voltage, current and resistance.
Electrolysis
Pass current through ionic substances and see products form at each electrode.
Energy Profiles
Compare reaction profiles and visualise activation energy and catalysts.
Enzyme Kinetics
Investigate how temperature, pH and substrate concentration affect enzyme activity.
Gas Laws
Change temperature, volume and pressure while watching particle behaviour.
Heart & Circulation
Follow blood through the double circulatory system and explore the cardiac cycle.
Mendel's Genetics
Run monohybrid crosses and compare observed results with expected ratios.
Momentum & Collisions
Crash trolleys together and examine conservation of momentum and energy.
Osmosis
Watch water cross membranes and compare plant and animal cell responses.
Photosynthesis
Run a pondweed experiment and investigate three key limiting factors.
Radioactive Decay
Model random decay and compare experimental curves with half-life theory.
Reaction Rates
Test how concentration, temperature, surface area and catalysts change rate.
Refraction of Light
Bend light through different materials and verify Snell's law.
Titration
Perform acid–base titrations, identify endpoints and calculate concentrations.
Wave Properties
Adjust frequency, amplitude and wavelength and see the wave equation in action.
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Built for revision. Useful in lessons.
Use SciSim for a quick concept check, a whole-class demonstration or an independent investigation. Every activity runs directly in a modern browser.
- No installation
- Live visual feedback
- Exportable data
- Curriculum-focused notes