Cambridge IGCSE · 0620 · Paper 2 · Multiple choice (Extended)
Chemistry 0620/22 May/June 2023 past paper
Cambridge IGCSE Chemistry (0620) Paper 2 (Multiple choice (Extended)), variant 2, May/June 2023: 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
- 26
File names: 0620_s23_qp_22 · 0620_s23_ms_22
Grade thresholds for 0620/22 May/June 2023
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 |
|---|---|---|---|---|---|---|
| 26 | 21 | 17 | 16 | 14 | 13 | 11 |
Topics in this paper
Which syllabus chapters 0620/22 May/June 2023 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 0620/22 May/June 2023
- Question 1
Four physical changes of ethanol are listed. 1 condensation 2 evaporation 3 freezing 4 boiling In which changes do the particles move further apart? A 1 and …
- Question 2
An atom of element X contains: ● 5 protons ● 6 neutrons ● 5 electrons. Which statements about element X are correct? 1 X has an atomic number of …
- Question 3
Ammonia, NH3, is a covalent molecule. Which diagram shows the outer-shell electron arrangement in a molecule of ammonia? …
- Question 4
Which structure does silicon(IV) oxide most closely resemble? A carbon dioxide B diamond C graphite D sodium chloride
- Question 5
Substance P conducts electricity when solid. Which particles move in solid P so that it can conduct electricity? 1 anions 2 cations 3 electrons A 1 and …
- Question 6
Which equation represents a chemical change? A BaCl 2(s) BaCl 2(l) B Ca2+(aq) + SO4 2–(aq) CaSO4(s) C KCl …
- Question 7
Which sample contains the largest number of molecules? …
- Question 8
The concentration of a sample of dilute aqueous sodium hydroxide is found by titration. The apparatus used is shown. dilute aqueous hydrochloric acid, HCl (aq) dilute aqueous sodium hydroxide, NaOH(aq) Which information is needed to calculate the concentration of the …
- Question 9
In experiment 1, aqueous copper(II) sulfate is electrolysed using graphite electrodes. In experiment 2, aqueous copper(II) sulfate is electrolysed using copper electrodes. Which statement identifies a half-equation for a reaction at one of the electrodes? A In experiment 1, the …
- Question 10
Which substance is not produced during the electrolysis of concentrated aqueous sodium chloride? A chlorine B hydrogen C sodium D sodium hydroxide
- Question 11
Methane burns in excess oxygen. The equation is shown. CH4(g) …
- Question 12
Which change increases the rate of reaction by decreasing the activation energy, Ea? A addition of a catalyst B decrease in size of solid reactants C increase in concentration of solutions D increase in temperature
- Question 13
In the Contact process, sulfur dioxide is reacted with oxygen to form sulfur trioxide. Which conditions are used in this reaction? temperature / C pressure / kPa catalyst …
- Question 14
Which reaction is reversible? A an iron nail rusting when left in moist air B limestone reacting with an acid to form carbon dioxide gas C magnesium burning in air to produce a white ash D white anhydrous copper(II) sulfate …
- Question 15
The equation for the reaction of sulfur dioxide with acidified potassium dichromate(VI) is shown. 3SO2 + Cr2O7 …
- Question 16
What is the definition of a strong acid? A a proton acceptor that is completely dissociated in aqueous solution B a proton acceptor that is partially dissociated in aqueous solution C a proton donor that is completely dissociated in aqueous …
- Question 17
Which statement about amphoteric oxides is correct? A They are made by combining an acidic oxide with a basic oxide. B They react with water to give a solution of pH 7. C They react with both acids and bases. …
- Question 18
Copper(II) carbonate is formed when aqueous sodium carbonate is added to aqueous copper(II) nitrate. The ionic equation for the reaction is shown. CO3 2–(aq) + Cu2+(aq) CuCO3(s) How is pure copper(II) carbonate obtained from the reaction mixture? A evaporate …
- Question 19
Q and R are elements in the same period of the Periodic Table. Q has 7 electrons in its outer shell and R has 2 electrons in its outer shell. Which statement about Q and R is correct? A Q …
- Question 20
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 21
Which statement about alkali metals is correct? A Lithium is more dense than sodium. B Sodium is more reactive than potassium. C Sodium has a higher melting point than potassium. D They are in Group II of the Periodic Table.
- Question 22
Which row describes the properties of a transition element? melting point density forms coloured compounds A high low no B high high yes C low low no D low low yes
- Question 23
Which row identifies the properties of zinc? thermal conductivity reacts with dilute acid A good yes B good no C poor yes D poor no
- Question 24
Uses of metals depend on their properties. Which property is necessary for the use given? use of the metal property of the metal A car bodies ductile B cutlery conducts heat C food containers resists corrosion D overhead electrical cables …
- Question 25
Which compounds both contribute to acid rain? A carbon monoxide and carbon dioxide B carbon monoxide and oxides of nitrogen C oxides of nitrogen and sulfur dioxide D sulfur dioxide and carbon dioxide
- Question 26
P, Q, R and S are metals. P reacts with dilute hydrochloric acid, forming hydrogen. Q reacts violently with water. R reacts with water to give hydrogen. S is formed by heating its oxide with carbon. Which row identifies the …
- Question 27
Which compound is formed when iron rusts? A anhydrous iron(II) oxide B anhydrous iron(III) oxide C hydrated iron(III) hydroxide D hydrated iron(III) oxide
- Question 28
Why is cryolite used in the extraction of aluminium by electrolysis? A It dissolves the aluminium oxide. B It protects the anodes from corrosion. C It changes bauxite to aluminium oxide. D It decreases the melting point of the aluminium.
- Question 29
A wax candle is made from a mixture of hydrocarbons. The candle is lit and placed in a gas jar along with a strip of cobalt(II) chloride test paper as shown. cobalt(II) chloride paper gas jar combustion products wax candle …
- Question 30
The hydrocarbon C4H8 has two structural isomers, but-1-ene and but-2-ene. Which statement is correct? A But-2-ene has the structural formula CH3CH=CHCH3 and the same general formula as butane. B But-2-ene has the structural formula CH3CH=CHCH3 and the same empirical formula …
- Question 31
Which compound rapidly decolourises aqueous bromine? A propane B propanoic acid C propanol D propene
- Question 32
What are the products of the addition reactions of ethene with bromine and hydrogen? bromine hydrogen A CH2BrCH2Br CH3CH3 B CH2BrCH2Br CH2CH2 C CH3CH2Br CH3CH3 D CH3CH2Br CH2CH2
- Question 33
Ethanol is manufactured by fermentation and the catalytic addition of steam to ethene. Which row describes an advantage of both methods? from sugar by fermentation from ethene and steam A ethanol needs to be purified the process is continuous B …
- Question 34
Methanoic acid and propan-1-ol react to form an ester. What is the structural formula of the ester? A HCOOCH2CH2CH3 B CH3CH2COOCH3 C CH3COOCH2CH3 D CH3CH2CH2COOH
- Question 35
What is the correct structure of PET? …
- Question 36
Alkanes undergo substitution reactions in the presence of UV light. Which equation represents a substitution reaction of ethane? …
- Question 37
Methane reacts with chlorine in substitution reactions. How many different products, containing a single carbon atom, can be made during the reactions? …
- Question 38
Rock salt is a mixture of salt and sand. The method used to separate the sand from the salt is listed. step 1 Crush the rock salt, add to warm water and stir. step 2 Pour the mixture through a …
- Question 39
Two compounds, M and N, are dissolved in water and separated by chromatography. The results are shown. 10 cm 2 cm solvent front baseline M N What is the Rf value of M and which compound is most soluble in …
- Question 40
When acid is added to salt X, a gas is produced which turns limewater milky. When sodium hydroxide is added to salt X, a gas is produced which turns litmus paper blue. What is X? A CaCO3 B (NH4)2CO3 C …
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