Cambridge IGCSE · 0620 · Paper 2 · Multiple choice (Extended)
Chemistry 0620/22 Oct/Nov 2019 past paper
Cambridge IGCSE Chemistry (0620) Paper 2 (Multiple choice (Extended)), variant 2, Oct/Nov 2019: the question paper and its official mark scheme, 40 questions, with the grade thresholds. Free to open, no account needed.
- Questions
- 40
- Marks
- 40
- Grade A from
- 29
File names: 0620_w19_qp_22 · 0620_w19_ms_22
Grade thresholds for 0620/22 Oct/Nov 2019
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 |
|---|---|---|---|---|---|---|
| 29 | 25 | 21 | 18 | 15 | 13 | 11 |
Topics in this paper
Which syllabus chapters 0620/22 Oct/Nov 2019 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 0620/22 Oct/Nov 2019
- Question 1
The rate of diffusion of a gas depends on its molecular mass and the temperature. Which combination of molecular mass and temperature gives the slowest rate of diffusion? molecular mass temperature A high high B high low C low high …
- Question 2
A student is asked to measure the time taken for 0.4 g of magnesium carbonate to react completely with 25.0 cm3 of dilute hydrochloric acid. Which pieces of apparatus does the student need? A balance, stop-clock, pipette B balance, stop-clock, …
- Question 3
Substance Q was investigated using chromatography. The chromatogram is shown. The diagram is not drawn to scale. Q 13 mm 83 mm 114 mm 129 mm baseline solvent front Q What is the Rf value of …
- Question 4
Which statement about an ionic compound is not correct? A It conducts electricity when dissolved in water. B It has a high melting point due to strong attractive forces between ions. C It has a regular lattice of oppositely charged …
- Question 5
What is the total number of electrons in one molecule of ammonia, NH3? …
- Question 6
Rubidium has two isotopes, Rb 85 37 and Rb …
- Question 7
Which statement about the structure and properties of silicon(IV) oxide is not correct? A It has a giant structure similar to that of diamond. B It has a high melting point due to the strong attractive force between molecules. C …
- Question 8
Which statement describes the structure of copper? A It has a lattice of negative ions in a ‘sea of electrons’. B It has a lattice of negative ions in a ‘sea of protons’. C It has a lattice of positive …
- Question 9
Phosphorus reacts with oxygen to form phosphorus(III) oxide as shown. …
- 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 diagram shows a simple cell. dilute sulfuric acid metal Q metal P wire voltmeter Which pair of metals produces the largest voltage? metal P metal Q A magnesium iron B magnesium copper C zinc iron D zinc copper
- Question 12
What are the ionic half-equations for the electrode reactions during the electrolysis of concentrated aqueous sodium chloride? anode cathode A Cl …
- Question 13
The temperature of the water in two beakers, X and Y, is measured as …
- Question 14
Which gases are used to generate electricity in a fuel cell? A carbon dioxide and oxygen B hydrogen and methane C hydrogen and oxygen D methane and carbon dioxide
- Question 15
Which row identifies a chemical 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 16
A sample of dilute nitric acid is added to lumps of limestone in a conical flask. The conical flask is placed on a balance and the loss in mass is measured. A second sample of nitric acid of a different …
- Question 17
When carbon monoxide reacts with hydrogen, methanol is formed. CO(g) + 2H2(g) CH3OH(g) The forward reaction is exothermic. Which statements are correct? 1 There are more moles of gas on the left-hand side of the reaction. 2 Increasing the temperature …
- Question 18
In the blast furnace, iron is formed when iron(III) oxide reacts with carbon monoxide in a redox reaction. Fe2O3 + 3CO → 2Fe + 3CO2 Which substance is the oxidising agent and which substance is the reducing agent? oxidising agent …
- Question 19
Which oxide is classified as an amphoteric oxide? A aluminium oxide B calcium oxide C copper(II) oxide D nitrogen oxide
- Question 20
Which statement describes the properties of hydrochloric acid? A Carbon dioxide is produced when limestone reacts with hydrochloric acid. B Hydrogen is produced when sodium hydroxide reacts with hydrochloric acid. C Methyl orange turns yellow in strong hydrochloric acid. D …
- Question 21
A method used to make copper(II) sulfate crystals is shown. 1 Place dilute sulfuric acid in a beaker. 2 Warm the acid. 3 Add copper(II) oxide until it is in excess. 4 Filter the mixture. 5 Evaporate the filtrate until …
- Question 22
Lead(II) sulfate is an insoluble salt. Which reaction produces a mixture from which lead(II) sulfate is obtained by filtration? A adding solid lead(II) carbonate to dilute sulfuric acid B adding solid lead(II) hydroxide to dilute sulfuric acid C adding metallic …
- Question 23
Helium is a noble gas. Which statement about helium is correct? A It has eight electrons in its outer shell. B It is a diatomic gas. C It is reactive. D It is used for filling balloons.
- Question 24
Which pair of elements reacts together most violently? A chlorine and lithium B chlorine and potassium C iodine and lithium D iodine and potassium
- Question 25
Iron(II) ions can be oxidised to iron(III) ions by hydrogen peroxide. Which statement explains why iron is a transition element? A Iron is a transition element because it can be oxidised. B Iron is a transition element because it has …
- Question 26
Some properties of substance X are listed. ● It conducts electricity when molten. ● It has a high melting point. ● It burns in oxygen and the oxide dissolves in water to give a solution with pH 11. What is …
- Question 27
Which row describes the uses of aluminium, copper and mild steel? aluminium copper mild steel A aircraft bodies electrical wiring car bodies B car bodies cooking utensils electrical wiring C electrical wiring aircraft bodies food containers D food containers aircraft …
- Question 28
The properties of four metals are listed. ● Metal W does not react with dilute hydrochloric acid. ● Metal X reacts with dilute hydrochloric acid. ● Metal Y displaces metal X from an aqueous solution of its ions. ● Metal …
- Question 29
Which statement about the extraction of aluminium from aluminium oxide is correct? A Aluminium is formed at the positive electrode during electrolysis. B Pure aluminium oxide is dissolved in molten cryolite. C Pure aluminium oxide is electrolysed using aluminium as …
- Question 30
River water contains soluble impurities, insoluble impurities and bacteria. River water is made safe to drink by filtration and chlorination. Which statement is correct? A Filtration removes bacteria and insoluble impurities, and chlorination removes soluble impurities. B Filtration removes insoluble …
- Question 31
Which process is used to separate nitrogen and oxygen from air? A chromatography B evaporation C filtration D fractional distillation
- Question 32
The apparatus shown is set up and left for a week. damp iron wool air water Which diagram shows the level of the water at the end of the week? …
- Question 33
The diagram represents an outline of the carbon cycle. carbon dioxide in the atmosphere animals organic waste power stations plants fossil fuels X death and excretion Y respiration photosynthesis Which processes are X and …
- Question 34
Ammonium sulfate is used as a fertiliser. It is made from ammonia and sulfuric acid. Which words complete gaps 1, 2 and 3? The 1 is made by the 2 process in which 3 is used as a catalyst. …
- Question 35
Which statement about limestone and lime is correct? A Limestone combines with water to produce slaked lime. B Lime is obtained from limestone by oxidation. C Lime is used in the desulfurisation of flue gases. D Lime is used in …
- Question 36
Some fractions obtained from petroleum are listed. fraction use position collected in the fractionating column 1 gasoline waxes and polishes below refinery gas 2 bitumen making roads above kerosene 3 kerosene jet fuel below gasoline 4 refinery gas heating and …
- Question 37
Which products are obtained by the cracking of an alkane? alkene hydrogen water …
- Question 38
Ethanol is produced by fermentation or by the reaction of ethene with steam. Which row is correct? by fermentation from ethene A uses a temperature of 100 °C uses a temperature of …
- Question 39
The diagram shows the structure of a monomer and of the polymer made from it. …
- Question 40
The structure of a naturally occurring polymer, X, is shown. …
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