0620 IGCSE Chemistry: past papers

Isotopes of sulfur and relative atomic mass, magnesium sulfide, sulfurous acid and its salts, and a redox reaction.

Using electronic configurations to identify noble gases, group numbers, conductors and ions.

Isotopes of copper and cobalt, relative atomic mass, transition metal properties, and hydrated cobalt(II) chloride as a test for water.

Trends in the alkali metals, and ionic bonding in sodium sulfide.

Covalent bonding: what a covalent bond is, a dot-and-cross diagram for chlorine(I) oxide, and why simple molecules have low boiling points.

Identifying molecules: elements, fuels, unsaturated compounds, the composition of air and Haber process reactants.

Sulfur chlorides: bonding and melting points, a dot-and-cross diagram, shifting an equilibrium, and collision theory.

Glucose in photosynthesis and fermentation, making ethanol from ethene and steam, and a dot-and-cross diagram of ethanol.

Isotopes of sulfur and relative atomic mass, magnesium sulfide, sulfurous acid and its salts, and a redox reaction.

Making insoluble silver bromide by precipitation: ionic equation, concentration, moles and mass of product.

The Haber process: conditions and catalyst, bond energies and ΔH, and making ammonia in the lab with a gas volume calculation.

Electrolysis of copper(II) sulfate solution with inert electrodes: electrode changes, products and half-equations.

Extracting aluminium by electrolysis: the ore, cryolite, conduction in the melt and the electrode half-equations.

Making insoluble lead(II) chloride by precipitation, and electrolysis of molten lead(II) chloride.

The Haber process: conditions and catalyst, bond energies and ΔH, and making ammonia in the lab with a gas volume calculation.

Energy changes: a reaction pathway diagram, bond energies, and changing a reversible reaction's equilibrium.

Sulfur chlorides: bonding and melting points, a dot-and-cross diagram, shifting an equilibrium, and collision theory.

Sulfur chlorides: bonding and melting points, a dot-and-cross diagram, shifting an equilibrium, and collision theory.

The Haber process: conditions and catalyst, bond energies and ΔH, and making ammonia in the lab with a gas volume calculation.

Ester hydrolysis as an equilibrium: naming the acid and alcohol, effects of changing conditions, and pH change.

Energy changes: a reaction pathway diagram, bond energies, and changing a reversible reaction's equilibrium.

Covalent bonding: what a covalent bond is, a dot-and-cross diagram for chlorine(I) oxide, and why simple molecules have low boiling points.

Metals forming positive ions, the reactivity series and displacement, and iron reacting with steam.

Isotopes of sulfur and relative atomic mass, magnesium sulfide, sulfurous acid and its salts, and a redox reaction.

Making insoluble silver bromide by precipitation: ionic equation, concentration, moles and mass of product.

Making insoluble lead(II) chloride by precipitation, and electrolysis of molten lead(II) chloride.

Short facts as numbers: composition of air, Contact process temperature, metals and halogens in the Periodic Table, fermentation, and isomers of an alkene.

Using electronic configurations to identify noble gases, group numbers, conductors and ions.

Trends in the alkali metals, and ionic bonding in sodium sulfide.

Extracting chromium from its ore with carbon, stainless steel as an alloy, and transition metal properties.

Isotopes of copper and cobalt, relative atomic mass, transition metal properties, and hydrated cobalt(II) chloride as a test for water.

Extracting chromium from its ore with carbon, stainless steel as an alloy, and transition metal properties.

The blast furnace: reduction of iron(III) oxide, removing silica with limestone, steel, and preventing rusting by galvanising.

Metals forming positive ions, the reactivity series and displacement, and iron reacting with steam.

The blast furnace: reduction of iron(III) oxide, removing silica with limestone, steel, and preventing rusting by galvanising.

Extracting chromium from its ore with carbon, stainless steel as an alloy, and transition metal properties.

Extracting aluminium by electrolysis: the ore, cryolite, conduction in the melt and the electrode half-equations.

The blast furnace: reduction of iron(III) oxide, removing silica with limestone, steel, and preventing rusting by galvanising.

Isotopes of copper and cobalt, relative atomic mass, transition metal properties, and hydrated cobalt(II) chloride as a test for water.

Short facts as numbers: composition of air, Contact process temperature, metals and halogens in the Periodic Table, fermentation, and isomers of an alkene.

Identifying molecules: elements, fuels, unsaturated compounds, the composition of air and Haber process reactants.

Choosing gases from a list (natural gas, smog and acid rain, unsaturated, monatomic, reducing agent), and the catalytic converter equation.

Ethene and the alkenes: homologous series, combustion, hydration to ethanol, and addition reactions.

Homologous series and general formulae, naming carboxylic acids, and amino acids in proteins.

Cracking alkanes to make alkenes, and addition polymerisation of propene.

Choosing gases from a list (natural gas, smog and acid rain, unsaturated, monatomic, reducing agent), and the catalytic converter equation.

Short facts as numbers: composition of air, Contact process temperature, metals and halogens in the Periodic Table, fermentation, and isomers of an alkene.

Ethene and the alkenes: homologous series, combustion, hydration to ethanol, and addition reactions.

Identifying molecules: elements, fuels, unsaturated compounds, the composition of air and Haber process reactants.

Ethene and the alkenes: homologous series, combustion, hydration to ethanol, and addition reactions.

Ester hydrolysis as an equilibrium: naming the acid and alcohol, effects of changing conditions, and pH change.

Glucose in photosynthesis and fermentation, making ethanol from ethene and steam, and a dot-and-cross diagram of ethanol.

Homologous series and general formulae, naming carboxylic acids, and amino acids in proteins.

Cracking alkanes to make alkenes, and addition polymerisation of propene.

Polyamides and polyesters: linkages, monomers and condensation polymerisation.

Homologous series and general formulae, naming carboxylic acids, and amino acids in proteins.

Making insoluble lead(II) chloride by precipitation, and electrolysis of molten lead(II) chloride.