Cambridge IGCSE · 0620 · Paper 2 · Multiple choice (Extended)
Chemistry 0620/23 May/June 2017 past paper
Cambridge IGCSE Chemistry (0620) Paper 2 (Multiple choice (Extended)), variant 3, May/June 2017: 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
- 26
File names: 0620_s17_qp_23 · 0620_s17_ms_23
Grade thresholds for 0620/23 May/June 2017
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 | 23 | 20 | 16 | 13 | 12 | 11 |
Topics in this paper
Which syllabus chapters 0620/23 May/June 2017 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 0620/23 May/June 2017
- Question 1
Small crystals of purple KMnO4 (Mr = 158) and orange K2Cr2O7 (Mr = 294) were placed at the centres of separate petri dishes filled with agar jelly. They were left to stand under the same physical conditions. After some time, …
- Question 2
A compound, X, has a melting point of 71 °C and a boiling point of 375 °C. Which statement about X is correct? A It is a liquid at 52 °C and a gas at …
- Question 3
A student used chromatography to analyse a green food colouring. The chromatogram obtained is shown. solvent front baseline blue spot yellow spot The table lists some yellow food dyes and their Rf values. Which yellow food dye does the green …
- Question 4
The electronic structures of atoms Q and R are shown. …
- Question 5
Which substance is a macromolecule? A ammonia B carbon dioxide C diamond D water
- Question 6
The diagram shows metallic bonding. X Y Which labels are correct? …
- Question 7
Aqueous iron(III) sulfate and aqueous sodium hydroxide react to give a precipitate of iron(III) hydroxide and a solution of sodium sulfate. What is the balanced equation for this reaction? A Fe2(SO4)3(aq) + 2NaOH(aq) → Fe(OH)3(s) + Na2SO4(aq) B Fe2(SO4)3(aq) + …
- Question 8
The equation for the reaction between sodium carbonate and dilute hydrochloric acid is shown. Na2CO3 + 2HCl → 2NaCl …
- Question 9
Which statement about electrolysis is correct? A Electrons move through the electrolyte from the cathode to the anode. B Electrons move towards the cathode in the external circuit. C Negative ions move towards the anode in the external circuit. D …
- Question 10
The reactivity series for a number of different metals is shown. most reactive least reactive magnesium zinc iron copper silver platinum The diagram shows different metal strips dipped into an electrolyte. V metal strip metal strip electrolyte Which pair of …
- Question 11
Heat energy is produced when hydrocarbons burn in air. Which equations represent this statement? 1 C2H5OH …
- Question 12
Which statements about exothermic and endothermic reactions are correct? 1 During an exothermic reaction, heat is given out. 2 The temperature of an endothermic reaction goes up because heat is taken in. 3 Burning methane in the air is an …
- Question 13
Hydrogen and chlorine react to form hydrogen chloride. The reaction is exothermic. H2(g) + Cl 2(g) → 2HCl (g) The overall energy change for this reaction is –184 kJ / mol. The table gives some of the bond energies involved. …
- Question 14
Which changes are physical changes? 1 melting ice to form water 2 burning hydrogen to form water 3 adding sodium to water 4 boiling water to form steam A 1 and …
- Question 15
A student was investigating the reaction between marble chips and dilute hydrochloric acid. bung marble chips 25 cm3 of dilute hydrochloric acid gas syringe Which changes slow down the rate of reaction? temperature of acid concentration of acid surface area …
- Question 16
Hydrogen is produced when methane reacts with steam. The equation for the reaction is shown. CH4(g) + H2O(g) CO(g) + 3H2(g) The forward reaction is endothermic. Which conditions produce the highest yield of hydrogen? pressure temperature A high high B …
- Question 17
An example of a redox reaction is shown. Zn + Cu2+ → Zn2+ + Cu Which statement about the reaction is correct? A Zn is the oxidising agent and it oxidises Cu2+. B Zn is the oxidising agent and it …
- Question 18
Which oxide is amphoteric? A Al 2O3 B CaO C Na2O D SO2
- Question 19
Chloric(I) acid, HCl O, is formed when chlorine dissolves in water. It is a weak acid. What is meant by the term weak acid ? A It contains fewer hydrogen atoms than a strong acid. B It is easily neutralised …
- Question 20
Silver nitrate reacts with sodium chloride to produce silver chloride and sodium nitrate. The equation for the reaction is shown. AgNO3(aq) + NaCl (aq) → AgCl (s) + NaNO3(aq) How is silver chloride separated from the reaction mixture? A crystallisation …
- Question 21
Aqueous sodium hydroxide reacts with an aqueous solution of compound Y to give a green precipitate. Aqueous ammonia also reacts with an aqueous solution of compound Y to give a green precipitate. In each case the precipitate is insoluble when …
- Question 22
Which element is less reactive than the other members of its group in the Periodic Table? A astatine B caesium C fluorine D rubidium
- Question 23
Ununseptium (atomic number 117) is a man-made element that is below astatine in Group VII of the Periodic Table. What is the expected state of ununseptium at room temperature? A a diatomic gas B a liquid C a monatomic gas …
- Question 24
Why are weather balloons sometimes filled with helium rather than hydrogen? A Helium is found in air. B Helium is less dense than hydrogen. C Helium is more dense than hydrogen. D Helium is unreactive.
- Question 25
Which equation from the zinc extraction process shows the metal being produced by reduction? A ZnO …
- Question 26
Element E: • forms an alloy • has a basic oxide • is below hydrogen in the reactivity series. What is E? A carbon B copper C sulfur D zinc
- Question 27
The section of the reactivity series shown includes a newly discovered element, symbol X. The only oxide of X has the formula XO. Ca Mg Fe X H Cu Which equation shows a reaction which occurs? A Cu(s) + X2+(aq) …
- Question 28
Stainless steel is an alloy of iron and other metals. It is strong and does not rust but it costs much more than normal steel. What is not made from stainless steel? A cutlery B pipes in a chemical factory …
- Question 29
The diagram shows some uses of water in the home. …
- Question 30
The carbon cycle describes how carbon dioxide gas is added to or removed from the atmosphere. Which row describes the movement of carbon dioxide during each process? photosynthesis combustion respiration A added to the atmosphere added to the atmosphere removed …
- Question 31
Which row gives the catalyst for the Haber process and the sources of the raw materials? catalyst source of hydrogen source of nitrogen A iron electrolysis fertiliser B iron methane air C vanadium pentoxide methane air D vanadium pentoxide methane …
- Question 32
Petrol burns in a car engine to produce waste gases which leave through the car exhaust. One of these waste gases is an oxide of nitrogen. Which statement describes how this oxide of nitrogen is formed? A Carbon dioxide reacts …
- Question 33
Which statement about sulfuric acid is correct? A It is made by the Haber process. B It is made in the atmosphere by the action of lightning. C It reacts with ammonia to produce a fertiliser. D It reacts with …
- Question 34
Two equations are shown. reaction 1 CaCO3 → CaO + CO2 reaction 2 CaO …
- Question 35
Fuel oil, gasoline, kerosene and naphtha are four fractions obtained from the fractional distillation of petroleum. What is the order of the boiling points of these fractions? highest boiling point → lowest boiling point A fuel oil → kerosene → …
- Question 36
Butane and methylpropane are isomers with molecular formula C4H10. Which statements are correct? 1 They have similar chemical properties. 2 They have the same general formula. 3 They have the same structural formula. …
- Question 37
The diagram shows part of the molecule of a polymer. …
- Question 38
Ethanol can be produced by fermentation or by the catalytic addition of steam to ethene. Which row shows an advantage and a disadvantage for each process? fermentation catalytic addition of steam to ethene advantage disadvantage advantage disadvantage A batch process …
- Question 39
The structure of an ester is shown. …
- Question 40
How can the amino acids in a protein be separated and identified? A Add a locating agent to the protein. B Hydrolyse the protein and then use chromatography. C Polymerise the protein and then add a locating agent. D Use …
Other Chemistry papers from May/June 2017
- 0620/11 Multiple choice (Core)
- 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