CambridgeCode: 0620• Cambridge IGCSE
IGCSE Chemistry (0620)
Official digital CBT practice for Cambridge IGCSE Chemistry (0620) featuring Paper 1 (Multiple Choice Core), Paper 2 (Multiple Choice Extended), Paper 3 (Theory Core), and Paper 4 (Theory Extended), interactive apparatus diagrams, complete Periodic Table reference, qualitative ion tests, and official mark schemes.
Syllabus Specification Topics
States of Matter & Kinetic Theory: Particle arrangement, changes of state, diffusion, and collision frequency
Atoms, Elements & Compounds: Subatomic particles, isotopes, ionic, covalent and metallic bonding, giant macromolecular structures
Stoichiometry & Chemical Calculations: Balancing equations, reacting masses, mole calculations, and percentage yield
Electrochemistry & Chemical Energetics: Electrolysis of molten salts and aqueous solutions, hydrogen fuel cells, exothermic and endothermic reactions
Chemical Reactions & Rates: Factors affecting rate, collision theory, reversible reactions, redox reactions with oxidation state changes
Acids, Bases & Salts: pH scale, preparation of salts (excess solid and titration), qualitative analysis of cations and anions
The Periodic Table & Metals: Group I alkali metals, Group VII halogens, transition metals, noble gases, reactivity series, and alloys
Chemistry of the Environment & Organic Chemistry: Clean air composition, air pollutants, fertilisers, homologous series of alkanes, alkenes, alcohols, carboxylic acids, and polymers
Digitized Past Papers for IGCSE Chemistry (0620)
Choose an exam paper below to start full Computer-Based Testing practice with timed countdown and official mark scheme.
0620/41May/June 2024
May/June 2024 Paper 41 (Theory Extended)
Official digitized Cambridge IGCSE™ Chemistry (0620/41) May/June 2024 Paper 4 Theory (Extended). 1 hour 15 minutes, 80 marks examination featuring chemical industrial processes, atomic structure & isotopes, bonding & structure comparison (sodium fluoride vs fluorine), reversible gas equilibrium kinetics, precipitation of lead(II) bromide & water of crystallisation calculation, blast furnace iron extraction & galvanising sacrificial protection, and organic empirical/molecular formula deduction, cracking, isomers & but-2-ene polymerization.
75 Minutes
80 Marks
Policy: Calculator Allowed
Key Topics Tested:
Q1: Industrial Chemistry – Contact ProcessQ2: Separation Techniques – Purification of WaterQ3: Extraction of Metals – AluminiumQ4: Organic Chemistry – Petroleum RefiningQ5: Organic Chemistry – Bioethanol ProductionQ6: Organic Chemistry – Cracking AlkanesQ7: Experimental Techniques – ChromatographyQ8: Atomic Structure, Isotopes & IonsQ9: Chemical Equations – Alkali Metal Halide FormationQ10: Metallic Bonding & Electrical ConductivityQ11: Covalent Dot-and-Cross DiagramsQ12: Physical States & Phase Change DataQ13: Structure & Bonding – Ionic vs Simple MolecularQ14: Electrolysis FundamentalsQ15: Electrolysis – Cathode Half-EquationsQ16: Equilibrium & Reversible ReactionsQ17: Le Chatelier’s Principle – Pressure EffectQ18: Concentration & Colour IntensityQ19: Temperature Effect & Enthalpy ChangeQ20: Redox & Oxidation NumbersQ21: Catalysts, Equilibrium & Activation EnergyQ22: Preparation of Insoluble Salts – PrecipitationQ23: Qualitative Analysis – Test for Sulfur DioxideQ24: Thermal Decomposition & Equation BalancingQ25: Water of Crystallisation StoichiometryQ26: Extraction of Iron – Blast Furnace ReactionsQ27: Zinc Extraction & Physical Phase ChangesQ28: Rust Prevention – Galvanising & Sacrificial ProtectionQ29: Amphoteric Oxides & Salt NomenclatureQ30: Empirical & Molecular Formula DeterminationQ31: Addition Polymerization & Monomer DeductionQ32: Alkane Cracking StoichiometryQ33: Esters, Carboxylic Acids & Structural Isomerism
0620/31May/June 2024
May/June 2024 Paper 31 (Theory Core)
Official digitized Cambridge IGCSE™ Chemistry (0620/31) May/June 2024 Paper 3 Theory (Core). 1 hour 15 minutes (80 marks) comprehensive structured theory examination covering chemical structures & bonding, human body element analysis, alkali metal trends, aluminium electrolysis extraction, organic displayed formulae & chromatography, atomic structure of carbon-14, rate of sulfur oxidation & kinetics, metal reactivity series & rust prevention, and hydrocarbon homologous series with full Cambridge mark schemes.
75 Minutes
80 Marks
Policy: Calculator Allowed
Key Topics Tested:
Q1: Alloys & Structure of Metallic MixturesQ2: Electrical Conductivity of Ionic CompoundsQ3: Giant Covalent MacromoleculesQ4: Hydrogen-Oxygen Fuel CellsQ5: Ionic Melting PointsQ6: Greenhouse Gases & Global WarmingQ7: Covalent Dot-and-Cross Bonding (Water H2O)Q8: Elemental Abundances & Metal/Non-Metal ClassificationQ9: Periodic Table: Periods and GroupsQ10: Chemical Nomenclature (Magnesium Hydroxide)Q11: Qualitative Analysis: Sodium Hydroxide with Calcium IonsQ12: Solubility Rules for SaltsQ13: Group I Alkali Metals: Trends in Melting Point and ReactivityQ14: Group I Trends: DensityQ15: Chemical Equations: Sodium with WaterQ16: Extraction of Metals: Aluminium OreQ17: Electrolysis Cell for Aluminium ExtractionQ18: Uses of Aluminium: Overhead Electrical CablesQ19: Acids and Bases: Alkalis, pH Measurement & IndicatorsQ20: Organic Unsaturation & Chromatography AnalysisQ21: Photosynthesis: Word Equation and Essential ConditionsQ22: Atomic Structure of Carbon-14 & Incomplete CombustionQ23: Chromium Carbonyl, Relative Molecular Mass Mr & RedoxQ24: Rates of Reaction: State Symbols, Reaction Curve & Surface AreaQ25: Equilibria, Gas Pollutants & Kinetic Diffusion TheoryQ26: Properties of Transition Metals & Rusting of IronQ27: Reactivity Series & Acid-Carbonate NeutralisationQ28: Organic Displayed Formulae & Homologous SeriesQ29: Industrial Manufacture of Ethanol & Catalytic Cracking of Alkenes
0620/21May/June 2024
May/June 2024 Paper 21 (Multiple Choice Extended)
Official Cambridge IGCSE Chemistry (0620/21) Paper 2 Multiple Choice (Extended) examination held in May/June 2024, digitized into interactive CBT mode with step-by-step mark schemes, authentic diagrams, and complete Periodic Table reference.
45 Minutes
40 Marks
Policy: Calculator Allowed
Key Topics Tested:
Q1: Kinetic Particle Theory & Gas LawsQ2: States of Matter & Changes of State (Melting)Q3: Diffusion of Gases & Relative Molecular MassQ4: Atomic Structure & Subatomic ParticlesQ5: Electronic Configuration & Periodic Table PlacementQ6: Isotopes & Chemical PropertiesQ7: Ionic Bonding & Lattice Properties (Potassium Chloride)Q8: Covalent Bonding & Shared Electron CountingQ9: Atomic Number & Total Electron CountingQ10: Stoichiometry & Percentage YieldQ11: Empirical Formula CalculationsQ12: The Mole Concept & Avogadro's ConstantQ13: Electroplating & Electrode Half-EquationsQ14: Principles of ElectrolysisQ15: Bond Energies & Enthalpy CalculationQ16: Reaction Pathway Enthalpy ProfilesQ17: Thermal Decomposition of LimestoneQ18: Rates of Reaction & Limiting ReactantsQ19: Collision Theory & Temperature EffectsQ20: Le Chatelier's Principle & Dynamic EquilibriaQ21: Industrial Chemistry (The Contact Process)Q22: Redox Reactions (Gain and Loss of Oxygen)Q23: Halogen Displacement & Electron TransferQ24: Reactions of Ammonium Salts with BasesQ25: Weak Acids & Aqueous EquilibriumQ26: Classification of Oxides (Acidic, Basic, Amphoteric)Q27: Period 3 Trends & Element ClassificationsQ28: Group VII Halogen Trends & StructureQ29: Properties of Transition ElementsQ30: Carboxylic Acids & Esterification (Propanoic Acid)Q31: Rusting of Iron & Rust PreventionQ32: Metal Displacement Reactions & ReactivityQ33: Water Pollution & EutrophicationQ34: Criteria of Purity (Fixed Boiling Point of Water)Q35: Catalytic Converters & Pollutant RemovalQ36: Manufacture of Ethanol (Hydration of Ethene)Q37: Polymers (PET & Chemical Recycling)Q38: Homologous Series (Alcohols)Q39: Reactions of Alkanes (Photochemical Substitution)Q40: Chromatography Principles & Locating Agents
0620/11May/June 2024
May/June 2024 Paper 11 (Multiple Choice Core)
Official Cambridge IGCSE Chemistry (0620/11) Paper 1 Multiple Choice (Core) examination held in May/June 2024, digitized into interactive CBT mode with step-by-step mark schemes and Periodic Table reference.
45 Minutes
40 Marks
Policy: Calculator Allowed
Key Topics Tested:
Q1: States of Matter & Kinetic Particle TheoryQ2: Kinetic Particle Theory & Collision FrequencyQ3: Atomic Structure & Subatomic ParticlesQ4: Ionic Bonding & Physical PropertiesQ5: Formation of Ions & ChargesQ6: Covalent Bonding & Shared PairsQ7: Giant Covalent Structures (Macromolecules)Q8: Balancing Chemical Equations & Blast FurnaceQ9: Stoichiometry & Reacting MassesQ10: Electrolysis of Acids & Molten SaltsQ11: Hydrogen–Oxygen Fuel CellsQ12: Energy Changes (Endothermic Reactions)Q13: Physical vs Chemical Changes (Particle Models)Q14: Rates of Reaction (Concentration & Temperature)Q15: Interpreting Reaction Rate GraphsQ16: Reversible Reactions & Test for WaterQ17: Redox Reactions & Oxidation DefinitionsQ18: Acids, Bases & Ammonium SaltsQ19: Oxides (Acidic vs Basic Oxides)Q20: Preparation of Salts (Titration)Q21: The Periodic Table (Structure & Trends)Q22: Group I Alkali Metals Physical TrendsQ23: Transition Elements PropertiesQ24: Noble Gases (Group VIII/0)Q25: Metals & Alloys ConductivityQ26: Alloys & Their CompositionsQ27: Reactivity Series of MetalsQ28: Chemical Reactions Producing Carbon DioxideQ29: Composition of Clean, Dry AirQ30: Fertilisers (NPK Elements)Q31: Sulfur & Environmental PollutionQ32: Air Pollution & ParticulatesQ33: Homologous Series of AlkanesQ34: Alkanes (Structure & Properties of Ethane)Q35: Manufacture of Ethanol (Fermentation)Q36: Carboxylic Acids (Ethanoic Acid)Q37: Environmental Issues with PlasticsQ38: Chromatography InterpretationQ39: Separation Techniques (Filtration & Acid Reaction)Q40: Qualitative Analysis (Identification of Ions)