Cambridge IGCSE · 0620 · Paper 2 · Multiple choice (Extended)
Chemistry 0620/22 May/June 2018 past paper
Cambridge IGCSE Chemistry (0620) Paper 2 (Multiple choice (Extended)), variant 2, May/June 2018: 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
- 27
File names: 0620_s18_qp_22 · 0620_s18_ms_22
Grade thresholds for 0620/22 May/June 2018
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 | 22 | 18 | 16 | 14 | 12 | 10 |
Topics in this paper
Which syllabus chapters 0620/22 May/June 2018 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 0620/22 May/June 2018
- Question 1
A gas is released at point X in the apparatus shown. X damp Universal Indicator paper Which gas turns the damp Universal Indicator paper red most quickly? A ammonia, NH3 B chlorine, Cl 2 C hydrogen chloride, HCl D sulfur …
- Question 2
A chromatography experiment was done to separate a mixture of four substances. The Rf values measured for these substances were …
- Question 3
Which piece of apparatus cannot be used to collect and measure the volume of gas produced in an experiment? A burette B gas syringe C measuring cylinder D pipette
- Question 4
The ‘lead’ in a pencil is made of a mixture of graphite and clay. ‘lead’ When the percentage of graphite is increased, the pencil slides across the paper more easily. Which statement explains this observation? A Graphite has a high …
- Question 5
Which pair shows particles with the same chemical properties? …
- Question 6
Which substances have similar structures? A diamond and graphite B diamond and silicon(IV) oxide C graphite and poly(ethene) D graphite and silicon(IV) oxide
- Question 7
Which substance is not a macromolecule? A diamond B graphite C silicon(IV) oxide D sulfur
- Question 8
The equation for the reaction between potassium carbonate and nitric acid is shown. K2CO3 + 2HNO3 → 2KNO3 …
- Question 9
A solution of sodium carbonate, Na2CO3, has a concentration of 0.03 mol / dm3. Which mass of sodium carbonate is dissolved in 1 dm3 of this solution? …
- Question 10
Aqueous copper(II) sulfate is electrolysed using copper electrodes. Which statement about the electrolysis is not correct? A An oxidation reaction occurs at the positive electrode. B The current is carried through the electrolyte by ions. C The negative electrode gains …
- Question 11
Dilute sulfuric acid is electrolysed using inert electrodes. What are the ionic half-equations for the reactions that take place at each electrode? positive electrode negative electrode …
- Question 12
Which diagram is a correctly labelled energy level diagram for an endothermic reaction? A activation energy overall energy change reactants products B activation energy overall energy change reactants products C activation energy overall energy change reactants products activation energy overall …
- Question 13
The equation for the complete combustion of methane is shown. CH4(g) …
- Question 14
Which row describes the effects of increasing both concentration and temperature on the collisions between reacting particles? increasing concentration increasing temperature A more collisions per second only more collisions per second only B more collisions per second and more collisions …
- Question 15
Sulfur dioxide reacts with oxygen at 2 atmospheres pressure. The forward reaction is exothermic. The equation for the reaction is shown. 2SO2(g) + O2(g) 2SO3(g) The reaction reaches equilibrium. The pressure is then doubled. How and why does the amount …
- Question 16
Iron(II) chloride solution reacts with chlorine gas. The equation is shown. 2FeCl 2(aq) + Cl 2(g) → 2FeCl 3(aq) Which statements about this reaction are correct? 1 Fe2+ ions are reduced to Fe3+ ions. 2 Chlorine acts as a reducing …
- Question 17
Which statement about oxides is correct? A A solution of magnesium oxide has a pH less than pH …
- Question 18
Which statement about acids and bases is correct? A A base is a donor of hydrogen ions. B An acid is an acceptor of protons. C A strong acid is fully ionised in aqueous solution. D A weak acid cannot …
- Question 19
The solubility of some salts is shown. chloride nitrate sulfate carbonate barium soluble soluble insoluble insoluble lead(II) insoluble soluble insoluble insoluble potassium soluble soluble soluble soluble zinc soluble soluble soluble insoluble Which two aqueous solutions produce an insoluble salt when …
- Question 20
Which methods are suitable for preparing both zinc sulfate and copper(II) sulfate? 1 reacting the metal oxide with warm dilute aqueous sulfuric acid 2 reacting the metal with dilute aqueous sulfuric acid 3 reacting the metal carbonate with dilute aqueous …
- Question 21
Which statement about the Periodic Table is correct? A Elements in the same group have the same number of electron shells. B It contains elements arranged in order of increasing proton number. C Metals are on the right and non-metals …
- Question 22
Chlorine, bromine and iodine are elements in Group VII of the Periodic Table. Which statement about these elements is not correct? A The colour gets darker down the group. B The density increases down the group. C They are all …
- Question 23
Which row describes the properties of a transition element? property 1 property 2 A forms colourless compounds acts as a catalyst B forms colourless compounds low electrical conductivity C high density acts as a catalyst D high density low electrical …
- Question 24
Stainless steel is an alloy of iron, carbon and other metals. Which row is correct? stainless steel is harder than pure iron stainless steel resists corrosion better than pure iron …
- Question 25
Metal X is more reactive than metal Y. Metal Y is more reactive than metal Z. Which statement is correct? A When metal X is placed in a solution of Y sulfate, there is no reaction. B When metal X …
- Question 26
Which statement about the industrial extraction of zinc is correct? A Cryolite is added to lower the melting point. B Molten zinc oxide is electrolysed. C Zinc oxide is heated with coke. D Zinc sulfide is heated with coke.
- Question 27
Which row describes the use of an alloy and the property upon which the use depends? alloy use property A mild steel cutlery resistant to corrosion B mild steel machinery strong C stainless steel cutlery low density D stainless steel …
- Question 28
Dry air is passed over hot copper until all the oxygen has reacted. heat copper dry air The volume of gas at the end of the reaction is 120 cm3. What is the starting volume of dry air? A 132 …
- Question 29
A steel bicycle which had been left outdoors for several months was starting to rust. What would not reduce the rate of corrosion? A Remove the rust and paint the bicycle. B Remove the rust and store the bicycle in …
- Question 30
Which statements about water are correct? 1 Household water contains dissolved salts. 2 Water for household use is filtered to remove soluble impurities. 3 Water is treated with chlorine to kill bacteria. 4 Water is used in industry for cooling. …
- Question 31
Ammonia is manufactured by reacting hydrogen with nitrogen in the Haber process. Which row describes the sources of hydrogen and nitrogen and the conditions used in the manufacture of ammonia in the Haber process? source of hydrogen source of nitrogen …
- Question 32
Which statements about the carbon cycle are correct? 1 Carbon dioxide is added to the atmosphere by respiration. 2 Carbon dioxide is added to the atmosphere by combustion of coal. 3 Carbon dioxide is removed from the atmosphere by photosynthesis. …
- Question 33
Which row describes the uses of sulfur and sulfur dioxide? sulfur sulfur dioxide A extraction of aluminium food preservative B extraction of aluminium water treatment C manufacture of sulfuric acid food preservative D manufacture of sulfuric acid water treatment
- Question 34
Limestone is used in many industrial processes. In which process is it not used? A manufacture of alkenes B manufacture of cement C manufacture of iron D manufacture of lime
- Question 35
What is not the correct use of the fraction named? name of fraction use A fuel oil making waxes B gas oil fuel in diesel engines C kerosene jet fuel D naphtha making chemicals
- Question 36
Which statement about alkenes is not correct? A They decolourise aqueous bromine. B They only contain the elements carbon and hydrogen. C They react with hydrogen to form alkanes. D They react with steam to produce carboxylic acids.
- Question 37
Which substances can be obtained by cracking hydrocarbons? A ethanol and ethene B ethanol and hydrogen C ethene and hydrogen D ethene and poly(ethene)
- Question 38
Two processes used for the large-scale production of ethanol are shown. process 1 A compound containing carbon, hydrogen and oxygen is used to produce ethanol. process 2 A compound containing carbon and hydrogen only is used to produce ethanol. Which …
- Question 39
What is the name of the organic product of the reaction shown? CH3COOH + CH3CH2OH → A ethyl ethanoate B ethyl methanoate C methyl ethanoate D methyl propanoate
- Question 40
Which two compounds react together to form a condensation polymer? A HOCH2CH2OH and CH3COOH B HOCH2CH2OH and CH3NH2 C HOCH2CH2OH and H2NCH2CH2NH2 D HOCH2CH2OH and HOOCCH2CH2COOH Group The Periodic Table of Elements 1 H hydrogen 1 2 He helium 4 …
Other Chemistry papers from May/June 2018
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- 0620/41 Theory (Extended)
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