Cambridge IGCSE 0620 · Cambridge O Level 5070
Everything you need to prepare for Cambridge Chemistry: Particles, bonding, moles, energetics, organic chemistry and the practical paper.
Practise 3,200 Cambridge questions organised by chapter, each checked against the mark scheme.
12 topicals live
Complete Cambridge papers with mark schemes, filtered by year, session and paper number.
623 papers
Concept notes and definitions by chapter, written by Huzaifa and Noor. Until they ship, each topic page lists exactly what the syllabus expects.
Coming soon
Interactive tools made for Chemistry: final days · igcse & o level, definitions viva, experimental chemistry igcse, energy changes lab, rate of reaction lab, titration lab, salt preparation simulators.
7 tools live
Questions by topic are being tagged for this syllabus.
Coming soon
Complete Cambridge papers with mark schemes, filtered by year, session and paper number.
8 papers
Concept notes and definitions by chapter, written by Huzaifa and Noor. Until they ship, each topic page lists exactly what the syllabus expects.
Coming soon
Interactive tools made for Chemistry: final days · igcse & o level, definitions viva, experimental chemistry igcse, energy changes lab, rate of reaction lab, titration lab, salt preparation simulators.
7 tools live
Maths, English, Chemistry, Physics, Biology and Computer Science, Oct/Nov 2026: pick what you sit and get a day-by-day plan from the real dates, rebuilt every morning, linked to the banks and past papers.
Say a definition out loud, or type it, and it is marked against the real Cambridge mark-scheme points: each point ticks as you say it. 551 definitions across Chemistry, Biology, Physics and Computer Science.
Every element with its Cambridge data-sheet mass, electron shells, group trends and the ions it forms. Click any element for its card.
Build and run every separation on the bench: filtration, evaporation, crystallisation, simple and fractional distillation and paper chromatography, then 76 real Cambridge questions with mark schemes.
Exothermic and endothermic, built up one step at a time. Watch bonds break and re-form with the energy counted, run six reactions on the thermometer, move the particles through every change of state, then the energy box, ΔH, reaction pathway diagrams and catalysts, with a 26-question quiz.
Watch particles collide and react. Compare box A with box B for concentration, pressure, surface area, temperature and catalysts, run the gas syringe, loss-of-mass and disappearing-cross experiments, draw your own rate graphs, then 94 real multiple-choice and 120 real written Cambridge questions.
Prepare a soluble salt by titration: assemble the apparatus, titrate, then crystallise.
Soluble salts, insoluble salts, precipitation and crystallisation, step by step.
Moles, mass, Mr, concentration and gas volume with the working shown, using the Cambridge data-sheet masses.
Balance chemical equations and check your own attempts. Type the skeleton equation; it finds the coefficients and explains the atom count.
Exam-style definitions by topic, with spaced repetition that keeps the ones you miss coming back.
Pick the topics, pick the size, and get a mixed quiz of real Cambridge questions marked instantly.