Cambridge IGCSE · 0620 · Paper 2 · Multiple choice (Extended)
Chemistry 0620/21 Oct/Nov 2024 past paper
Cambridge IGCSE Chemistry (0620) Paper 2 (Multiple choice (Extended)), variant 1, Oct/Nov 2024: the question paper and its official mark scheme, 40 questions worth 40 marks, with the grade thresholds. Free to open, no account needed.
- Questions
- 40
- Marks
- 40
- Grade A from
- 27
File names: 0620_w24_qp_21 · 0620_w24_ms_21
Grade thresholds for 0620/21 Oct/Nov 2024
The minimum raw marks Cambridge set for each grade on this component (out of 40). Thresholds change every session and variant, so always compare your score with the paper you actually sat.
| A | B | C | D | E | F | G |
|---|---|---|---|---|---|---|
| 27 | 23 | 20 | 18 | 16 | 14 | 12 |
Topics in this paper
Which syllabus chapters 0620/21 Oct/Nov 2024 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 0620/21 Oct/Nov 2024
- Question 1
Which row describes the arrangement and motion of the particles in a liquid? arrangement motion A random and particles are touching moving slowly B random with space between all particles moving slowly C an ordered lattice with all particles touching …
- Question 2
Which gas has the lowest rate of diffusion at room temperature and pressure? A the gas produced when ammonium chloride is heated with aqueous sodium hydroxide B the gas which makes up approximately 78% of clean, dry air C the …
- Question 3
Which diagram represents one helium atom? …
- Question 4
The diagram shows part of an ionic lattice structure. …
- Question 5
Which statement about nitrogen molecules and ethene molecules is correct? A A nitrogen molecule has 2 more shared electrons than an ethene molecule. B An ethene molecule has 3 more shared electrons than a nitrogen molecule. C A nitrogen molecule …
- Question 6
Sulfur is a simple molecule with the formula S8. Which row describes and explains the melting point of sulfur? melting point explanation A high the covalent bonds between sulfur atoms are strong B high the covalent bonds between sulfur molecules …
- Question 7
Which row identifies a property and an explanation of the property for both diamond and silicon(IV) oxide? property explanation of property A very hard diamond has a giant covalent structure and silicon(IV) oxide has a giant ionic structure B high …
- Question 8
Which statement about the structure of metals explains why metals are malleable? A The electrons can move freely throughout the lattice. B The layers of metal ions can slide over each other. C The metal ions are positively charged. D …
- Question 9
What is the formula of iron(III) oxide? A FeO B Fe3O4 C FeO2 D Fe2O3
- Question 10
Calcium carbonate is heated. Calcium oxide and carbon dioxide gas are formed. The equation for the reaction is shown. CaCO3 CaO + CO2 225 kg of calcium carbonate is heated until there is no further change in mass. The …
- Question 11
The apparatus used for electrolysis is shown. electrodes electrolyte d.c. power supply + – Which statement is correct? A Copper forms at the anode in some electrolysis reactions. B Hydrogen forms at the cathode in some electrolysis reactions. C Oxygen …
- Question 12
Which statement about the electrolysis of aqueous copper(II) sulfate is correct? A When copper electrodes are used, the solution turns from blue to colourless. B When graphite electrodes are used, bubbles of gas are formed at the cathode. C When …
- Question 13
Which statement describes an advantage of using a hydrogen–oxygen fuel cell in a car compared to a gasoline engine? A The hydrogen is difficult to store. B The hydrogen is highly flammable. C The hydrogen used is made from hydrocarbons. …
- Question 14
Two reaction pathway diagrams are shown. Which arrow represents the activation energy for a reaction which releases thermal energy? A B energy progress of reaction C D energy progress of reaction
- Question 15
Which statements about the Haber process are correct? 1 A high temperature is used because the reaction is slow at room temperature. 2 A high pressure is used because there are more moles of gaseous reactants than moles of gaseous …
- Question 16
Which substance is a raw material used to manufacture sulfuric acid? A vanadium(V) oxide B sulfur C sulfur dioxide D sulfur trioxide
- Question 17
Which colours are seen when litmus and methyl orange are added to separate samples of aqueous sodium hydroxide? litmus methyl orange A blue orange B blue yellow C purple orange D purple yellow
- Question 18
Information about the solubility in water of four oxides is shown. Which oxide, when added to water, gives a solution with a pH less than pH 7? name of oxide solubility in water A nitrogen dioxide soluble B copper(II) oxide …
- Question 19
Copper(II) sulfate is made when copper(II) carbonate reacts with dilute sulfuric acid. CuCO3 + H2SO4 CuSO4 …
- Question 20
Which statement about elements in Group I or Group VII of the Periodic Table is correct? A Bromine reacts with potassium chloride to produce chlorine. B Iodine is a monatomic non-metal. C Lithium has a higher melting point than potassium. …
- Question 21
Some information about an element from Group VII of the Periodic Table is shown. melting point …
- Question 22
Manganese(IV) oxide, MnO2, is a black solid. The equation for the reaction between manganese(IV) oxide and dilute hydrochloric acid is shown. MnO2 + 4HCl MnCl …
- Question 23
Part of a steel ship is protected from rusting using a sacrificial metal. What is a suitable sacrificial metal? A copper B zinc C silver D potassium
- Question 24
Which row gives a use for the named metal and two properties which both explain this use? metal use property 1 property 2 A aluminium aircraft construction high density resistant to corrosion B copper electrical wiring good electrical conductivity ductile …
- Question 25
The apparatus used for the extraction of aluminium by electrolysis is shown. carbon lining as cathode carbon anode + – molten aluminium solution of aluminium oxide in molten cryolite Which equation represents the reaction at the anode? …
- Question 26
Which gas is both an element and present in clean, dry air? A argon B carbon dioxide C chlorine D water vapour
- Question 27
Oxides of nitrogen formed in a car’s engine are removed using a catalytic converter. What happens to the oxides of nitrogen in the catalytic converter? A They are hydrated. B They are neutralised. C They are oxidised. D They are …
- Question 28
What is the equation for photosynthesis? A 6CO2 …
- Question 29
Four statements about members of the same homologous series are listed. 1 They have the same volatility. 2 They have the same molecular formula. 3 They have the same functional group. 4 They have the same general formula. Which statements …
- Question 30
Ethene reacts with steam to produce ethanol. Which row describes each compound? ethene ethanol A saturated saturated B saturated unsaturated C unsaturated saturated D unsaturated unsaturated
- Question 31
Which process is used to make an alkene from a long-chain alkane? A combustion B condensation C cracking D polymerisation
- Question 32
Which fraction obtained from petroleum has the lowest boiling point? A diesel oil B fuel oil C kerosene D naphtha
- Question 33
Alkanes undergo substitution reactions with chlorine in the presence of ultraviolet light. Which equation shows a reaction of this type? …
- Question 34
Information about two reactions of ethene is listed. ● Reaction 1 requires a nickel catalyst. ● Reaction 2 requires an acid catalyst. Which substance reacts with ethene in each reaction? reaction 1 reaction 2 A bromine steam B bromine hydrogen …
- Question 35
Which process converts CH3CH2OH to CH3COOH? A bacterial oxidation B fermentation C catalytic addition of steam D catalytic addition of hydrogen
- Question 36
The structure of an ester is shown. …
- Question 37
Which statements about monomers or polymers are correct? 1 Monomers are always joined together by addition reactions. 2 A polymer can be formed from a single type of monomer. 3 A polymer can be formed by joining two different types …
- Question 38
The diagram shows the structure of a naturally occurring polymer, …
- Question 39
Which row shows how the boiling point and the melting point of water change when a soluble impurity is added to the water? boiling point melting point A increases increases B decreases decreases C increases decreases D decreases increases
- Question 40
X is a white powder. The following tests are done on X. ● When a few drops of aqueous sodium hydroxide are added to a solution of X, no precipitate is seen. ● When X is heated with aqueous sodium …
Other Chemistry papers from Oct/Nov 2024
- 0620/11 Multiple choice (Core)
- 0620/12 Multiple choice (Core)
- 0620/13 Multiple choice (Core)
- 0620/22 Multiple choice (Extended)
- 0620/23 Multiple choice (Extended)
- 0620/31 Theory (Core)
- 0620/32 Theory (Core)
- 0620/33 Theory (Core)
- 0620/41 Theory (Extended)
- 0620/42 Theory (Extended)
- 0620/43 Theory (Extended)
- 0620/61 Alternative to Practical
- 0620/62 Alternative to Practical
- 0620/63 Alternative to Practical