Cambridge IGCSE · 0620 · Paper 2 · Multiple choice (Extended)
Chemistry 0620/23 May/June 2022 past paper
Cambridge IGCSE Chemistry (0620) Paper 2 (Multiple choice (Extended)), variant 3, May/June 2022: 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
- 24
File names: 0620_s22_qp_23 · 0620_s22_ms_23
Grade thresholds for 0620/23 May/June 2022
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 |
|---|---|---|---|---|---|---|
| 24 | 20 | 16 | 14 | 13 | 12 | 11 |
Topics in this paper
Which syllabus chapters 0620/23 May/June 2022 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 0620/23 May/June 2022
- Question 1
Which two gases will diffuse at the same rate, at the same temperature? A carbon monoxide and carbon dioxide B carbon monoxide and nitrogen C chlorine and fluorine D nitrogen and oxygen
- Question 2
A student measures the time taken for 2.0 g of magnesium to dissolve in 50 cm3 of dilute sulfuric acid. Which apparatus is essential to complete the experiment? 1 stop-clock 2 measuring cylinder 3 thermometer 4 balance …
- Question 3
Which statement describes the properties of both diamond and silicon(IV) oxide? A They are brittle, with a low melting point, and are insoluble in water. B They are hard, with a high melting point, and are electrical insulators. C They …
- Question 4
Paper chromatography is used to separate four different coloured inks, …
- Question 5
Particle P has an atomic number of 18, a mass number of 40 and no overall charge. Particle Q has an atomic number of 19, a mass number of 40 and a single positive charge. Which statement is correct? A …
- Question 6
Which statement about the properties of metals is correct? A Metals are malleable because the layers of positive ions can slide over each other. B Metals conduct electricity when solid because the positive ions move freely through the metal. C …
- Question 7
The equation for the reaction between barium chloride and dilute sulfuric acid is shown. BaCl 2 + H2SO4 BaSO4 + 2HCl Which row shows the state symbols for this equation? BaCl 2 H2SO4 BaSO4 2HCl A (aq) (aq) (s) …
- Question 8
A 0.5 g sample of calcium carbonate is reacted with excess dilute hydrochloric acid. CaCO3(s) + 2HCl (aq) CaCl 2(aq) …
- Question 9
Aluminium is manufactured from aluminium oxide by electrolysis. Which row shows the ionic half-equations at each electrode and describes the role of cryolite in the process? reaction at anode reaction at cathode role of cryolite …
- Question 10
The diagram shows the electrolysis of concentrated hydrochloric acid and concentrated aqueous sodium chloride using carbon electrodes. …
- Question 11
Which statement about fuels is correct? A Coal and ethanol are examples of non-renewable energy sources. B Hydrogen and oxygen can be reacted to produce an electric current. C Large amounts of energy are taken in by a fuel when …
- Question 12
Which row identifies a chemical change and a physical change? chemical change physical change A boiling ethanol burning ethanol B burning ethanol evaporating ethanol C dissolving ethanol in water burning ethanol D evaporating ethanol dissolving ethanol in water
- Question 13
Metal M reacts with steam and produces gas G. Which row identifies gas G and the type of reaction when metal M reacts with steam? gas G type of reaction A hydrogen redox B hydrogen neutralisation C oxygen redox D …
- Question 14
Which statement explains why increasing the concentration of a reactant increases the rate of the reaction? A A greater proportion of the particles have the activation energy so there are more successful collisions. B Particles have more energy so there …
- Question 15
Water is added to anhydrous copper(II) sulfate. What happens during the reaction? A The copper(II) sulfate turns blue and the solution formed gets colder. B The copper(II) sulfate turns blue and the solution formed gets hotter. C The copper(II) sulfate …
- Question 16
Which statement explains why lime is added to soil? A to decrease the pH of acidic soil B to decrease the pH of alkaline soil C to increase the pH of acidic soil D to increase the pH of alkaline …
- Question 17
Sulfur dioxide is bubbled through water containing litmus. water and litmus sulfur dioxide Which row describes and explains what happens to the litmus? observation explanation A it turns blue sulfur dioxide is a basic oxide B it turns blue sulfur …
- Question 18
The oxides of two elements, X and Y, are separately dissolved in water and the pH of each solution tested. oxide tested pH of solution …
- Question 19
An acid is neutralised by adding an excess of an insoluble solid base. A soluble salt is formed. How is the pure salt obtained from the reaction mixture? A crystallisation evaporation filtration B evaporation crystallisation filtration …
- Question 20
Which ion forms a precipitate that dissolves in excess with both aqueous ammonia and with aqueous sodium hydroxide? A calcium ion, Ca2+ B copper(II) ion, Cu2+ C iron(III) ion, Fe3+ D zinc ion, Zn2+
- Question 21
Elements in Group IV of the Periodic Table are shown. carbon silicon germanium tin lead What does not occur in Group IV as it is descended? A The proton number of the elements increases. B The elements become more metallic. …
- Question 22
W, X, Y and Z are elements in Period 3 of the Periodic Table. The numbers of outer-shell electrons in an atom of each element are shown. element number of outer-shell electrons …
- Question 23
Selenium is an element in Group VI. Group VI elements follow similar trends to Group VII elements. Which statement about selenium is correct? A It has a higher density than sulfur. B It has a lower melting point than sulfur. …
- Question 24
Which row describes the properties of a typical transition element? melting point density used as catalyst A high high yes B high low no C low high yes D low low no
- Question 25
Which row describes an atom of a noble gas? number of protons number of neutrons number of electrons …
- Question 26
Some properties of four elements, …
- Question 27
Which substance is used to reduce zinc oxide in the manufacture of zinc? A carbon B carbon dioxide C hydrogen D sulfur dioxide
- Question 28
Three metal compounds, J, K and L, are heated using a Bunsen burner. The results are shown. J colourless gas produced, which relights a glowing splint K colourless gas produced, which turns limewater milky L no reaction Which row identifies …
- Question 29
Nitrogen oxide, NO, is formed in the engine of petrol-powered cars. One constituent of petrol is octane, C8H18. Nitrogen oxide is removed from exhaust fumes by catalytic converters. Which row identifies the reactants that produce nitrogen oxide and a reaction …
- Question 30
A magnesium block is attached to iron to prevent it from rusting. Which statement about this method of rust prevention is correct? A Magnesium corrodes instead of iron because it is more reactive. B Magnesium prevents oxygen from reaching the …
- Question 31
Fertilisers are used to provide three of the elements needed for plant growth. Which two compounds would give a fertiliser containing all three of these elements? A Ca(NO3)2 and (NH4)2SO4 B Ca(NO3)2 and (NH4)3PO4 C KNO3 and (NH4)2SO4 D KNO3 …
- Question 32
Which processes increase the amount of carbon dioxide in the air? 1 combustion of hydrogen 2 combustion of methane 3 photosynthesis by plants 4 thermal decomposition of limestone A 1 and …
- Question 33
In the Contact process, sulfur dioxide is converted into sulfur trioxide. 2SO2(g) + O2(g) 2SO3(g) What is the effect of lowering the pressure on the rate of formation and percentage yield of sulfur trioxide at equilibrium? rate of formation percentage …
- Question 34
What are the products when limestone (calcium carbonate) is heated strongly? A calcium hydroxide and carbon dioxide B calcium hydroxide and carbon monoxide C calcium oxide and carbon dioxide D calcium oxide and carbon monoxide
- Question 35
The structure of ester W is shown. …
- Question 36
The equation for the reaction between butane, C4H10, and chlorine is shown. C4H10 + Cl 2 C4H9Cl + HCl Which type of reaction does butane undergo when it reacts with chlorine? A addition B reduction C acid–base D substitution
- Question 37
Butene has three structural isomers which are alkenes. Which statements about these isomers are correct? 1 They have the same molecular formula. 2 They have different numbers of bonds in the molecule. 3 They have a C=C bond in the …
- Question 38
The hydrocarbon C12H26 is cracked to give X and Y, as shown. …
- Question 39
An ester, C4H8O2, is made by reacting 0.06 mol of ethanol, C2H6O, and 0.05 mol of ethanoic acid, …
- Question 40
Which type of compound is made when a protein is hydrolysed? A alkene B amino acid C carboxylic acid D sugar Group The Periodic Table of Elements 1 H hydrogen 1 2 He helium 4 I II III IV V …
Other Chemistry papers from May/June 2022
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- 0620/12 Multiple choice (Core)
- 0620/13 Multiple choice (Core)
- 0620/21 Multiple choice (Extended)
- 0620/22 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