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Cambridge IGCSE 0620

IGCSE Chemistry practicals you can actually run

Cambridge examines practical skills in Paper 5, the practical test, or Paper 6, the alternative to practical. Both reward the same thing: knowing what the apparatus does, what the observation is, and why. These simulators let you do the experiment as many times as you like before either paper.

0620 syllabusPaper 5 and Paper 614 relevant labsFree, no sign-up
Open the digital lab

Topic by topic

Every lab below runs in the browser, needs no install and works on a phone. None of them replace a real bench - they let you rehearse it, break it safely, and see the numbers behind the observation.

Rates of reactionConcentration, surface area, temperature and catalysts, and reading a rate off a gradient.
Rate of reactionConcentration and rate
ElectrolysisProducts at each electrode, half equations, and why the electrolyte matters.
Electrolysis of waterMolten lead bromideChlor-alkali process
Qualitative analysisTests for gases, cations and anions, and the observations examiners expect you to write.
Tests for gasesCation and anion tests
Acids, bases and saltsIndicator choice, the pH scale, and telling a strong acid from a weak one.
Indicators and pHStrong and weak acids
Metals and the reactivity seriesReactions with water and steam, displacement, and collecting hydrogen over water.
Metals with water and steamBurning magnesium ribbon
Separation techniquesFractional distillation, where the thermometer goes, and why a column separates better than a simple still.
Fractional distillation
Stoichiometry and equationsBalancing, conservation of mass, and mole calculations from gas volumes.
Balancing equations
Atoms, bonding and the periodic tableElectron configuration, molecular shape, and trends down a group and across a period.
Build an atomRutherford gold foil experimentCathode ray experiment3D molecular labPeriodic table explorerStates of matter

The labs in full

19 experiments matter for this syllabus. Each opens on its own page and is free to use.

Rate of reaction

Concentration and rate

Electrolysis of water

Molten lead bromide

Chlor-alkali process

Tests for gases

Cation and anion tests

Indicators and pH

Strong and weak acids

Metals with water and steam

Burning magnesium ribbon

Fractional distillation

Balancing equations

Build an atom

Rutherford gold foil experiment

Cathode ray experiment

3D molecular lab

Periodic table explorer

States of matter

Common questions

Which IGCSE paper are practicals examined in?

Cambridge IGCSE Chemistry 0620 assesses practical skills in Paper 5, a timed practical test, or Paper 6, the alternative to practical, which is a written paper about experiments. Your school chooses which one you sit. Both ask you to plan, record observations, handle data and evaluate a method, so the same preparation works for either.

Can a simulator replace real lab time?

No, and it is not meant to. Handling apparatus, judging an end point and working safely are things you learn at a bench. What a simulator gives you is repetition: you can run the rusting investigation twenty times in an afternoon, change one variable at a time, and see the pattern that a single school session rarely makes obvious.

Do I need to install anything?

Nothing. Each lab is a single web page. Open it, and once it has loaded it keeps working even if your connection drops. It runs on a phone, a tablet, a school Chromebook or a desktop.

Is it free?

Yes. Every simulator on the site is free to open and use, with no account required. Paid tuition is separate.

Studying something else?

The same labs, grouped for a different syllabus.

IGCSE Chemistry 0620CBSE Class 10 chemistryJEE chemistryNEET chemistryChemistry virtual lab