Cambridge IGCSE · 0620 · Paper 2 · Multiple choice (Extended)
Chemistry 0620/22 Feb/March 2019 past paper
Cambridge IGCSE Chemistry (0620) Paper 2 (Multiple choice (Extended)), variant 2, Feb/March 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
- 31
File names: 0620_m19_qp_22 · 0620_m19_ms_22
Grade thresholds for 0620/22 Feb/March 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 |
|---|---|---|---|---|---|---|
| 31 | 26 | 21 | 18 | 15 | 13 | 11 |
Topics in this paper
Which syllabus chapters 0620/22 Feb/March 2019 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 0620/22 Feb/March 2019
- Question 1
Pure water boils at 100 °C. What happens to the water particles when water boils? A They gain energy and move further apart. B They gain energy and stay close together. C They lose energy and move further apart. D …
- Question 2
Which method should be used to separate a mixture of two liquids? A crystallisation B electrolysis C filtration D fractional distillation
- Question 3
Lead(II) iodide is insoluble in water. Lead(II) iodide is made by adding aqueous lead(II) nitrate to aqueous potassium iodide. Which pieces of apparatus are needed to obtain solid lead(II) iodide from 20 cm3 of aqueous lead(II) nitrate? …
- Question 4
The chromatogram of substance S is shown. Some distances, …
- Question 5
Which row describes isotopes of the same element? number of protons number of neutrons A different different B different same C same different D same same
- Question 6
Which row describes the structure of the positive ion in sodium chloride? protons electrons neutrons …
- Question 7
Which statement about copper, diamond and silicon(IV) oxide is correct? A Copper and silicon(IV) oxide have similar electrical conductivity. B In diamond the carbon atoms are covalently bonded as flat sheets. C In silicon(IV) oxide the silicon and oxygen atoms …
- Question 8
An oxide of nitrogen has the following composition by mass: …
- Question 9
Calcium carbonate reacts with dilute hydrochloric acid according to the equation shown. CaCO3 + 2HCl → CaCl 2 + CO2 …
- 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
Aqueous copper(II) sulfate is electrolysed using copper electrodes. What are the ionic half-equations for the reactions that occur at each electrode? anode cathode A Cu → Cu2+ + 2e– Cu2+ …
- Question 12
10 g of ammonium nitrate is added to water at 25 °C and the mixture stirred. The ammonium nitrate dissolves and, after one minute, the temperature of the solution is 10 °C. Which word describes this change? A endothermic B …
- Question 13
Hydrogen reacts with chlorine according to the following equation. H2(g) + Cl 2(g) → 2HCl (g) The reaction is exothermic. Which statement about this reaction is correct? A Energy absorbed for bond breaking is greater than the energy released in …
- Question 14
Hydrogen-oxygen fuel cells can be used to power cars. Platinum is used as a catalyst. The amount of energy produced per gram is shown for three fuels. fuel energy produced per g of fuel / kJ hydrogen 143 methane 55 …
- Question 15
A student adds dilute hydrochloric acid at two different temperatures to two different lumps of limestone. The lumps of limestone have the same mass. The carbon dioxide gas produced is collected in a gas syringe. The volume of carbon dioxide …
- Question 16
Which reaction is reversible? A Cu + ZnSO4 → CuSO4 + Zn B CuO + H2SO4 → CuSO4 …
- Question 17
Some nitrogen dioxide gas was put in a gas syringe. The end of the gas syringe is sealed. A reversible reaction occurs. The reaction reaches equilibrium. 2NO2(g) N2O4(g) dark brown light yellow The forward reaction is exothermic. Which statement about …
- Question 18
The reaction between magnesium and carbon dioxide is shown in the equation. 2Mg + CO2 → 2MgO + C Which statement describes what happens in this reaction? A Carbon is oxidised. B Magnesium is reduced. C Neither oxidation nor reduction …
- Question 19
Which changes involve reduction? …
- Question 20
Barium hydroxide is an alkali. It reacts with hydrochloric acid. How does the pH of the hydrochloric acid change as an excess of aqueous barium hydroxide is added? A The pH decreases from pH 14 and becomes constant at pH …
- Question 21
Which statement describes a chemical property of aluminium oxide, Al 2O3? A It reacts with acids but not with bases. B It reacts with acids and bases. C It reacts with bases but not with acids. D It reacts with …
- Question 22
The results of two tests on an aqueous solution of X are shown. test observation aqueous sodium hydroxide added green precipitate formed acidified aqueous silver nitrate added yellow precipitate formed What is X? A copper(II) chloride B copper(II) iodide C …
- Question 23
Four stages used to prepare an insoluble salt are listed. 1 drying 2 filtration 3 precipitation 4 washing In which order are the stages done? …
- Question 24
The elements sodium to argon form Period 3 of the Periodic Table. Which row describes the trend across Period 3 from left to right? number of outer shell electrons metallic character group number A decreases decreases decreases B decreases increases …
- Question 25
Astatine is below iodine in Group VII in the Periodic Table. Which row describes the properties of astatine? state at room temperature reactivity A gas displaces chlorine, bromine and iodine B gas displaces iodine but does not displace chlorine or …
- Question 26
Which statement explains why elements in Group VIII of the Periodic Table are unreactive? A They are monatomic gases. B They form stable diatomic molecules. C They have a full outer shell of electrons. D They share electrons with each …
- Question 27
In which reaction does Fe(s) form ions when the mixture is heated? A Fe(s) + CaO(s) B Fe(s) + MgO(s) C Fe(s) + ZnO(s) D Fe(s) + CuO(s)
- Question 28
The list gives the order of some metals and hydrogen in the reactivity series. Metal X is also included. most reactive K Mg Zn H X least reactive Cu Which row correctly shows the properties of metal X? reacts with …
- Question 29
Which metal carbonate does not produce carbon dioxide when it is heated? A copper(II) carbonate B iron(II) carbonate C potassium carbonate D zinc carbonate
- Question 30
Which statement about the extraction of metals is correct? A Aluminium is extracted by the electrolysis of hematite. B Cryolite acts as a reducing agent in the extraction of aluminium. C Zinc is extracted by the electrolysis of zinc blende. …
- Question 31
The diagram shows how water is treated to make it suitable for drinking. reservoir of water stage 1 stage 2 chlorination stage 3 drinking water stage 4 What happens in stage 2? A condensation B sublimation C evaporation D filtration
- Question 32
What are the main substances produced by the fractional distillation of liquid air? A oxygen and carbon dioxide B oxygen and nitrogen C helium and nitrogen D hydrogen and oxygen
- Question 33
The raw materials for the Haber process are hydrogen and nitrogen. What are the sources of the hydrogen and nitrogen? A hydrogen from ethanol and nitrogen from NPK fertilisers B hydrogen from methane and nitrogen from air C hydrogen from …
- Question 34
Which process removes carbon dioxide from the Earth’s atmosphere? A combustion B heating limestone C photosynthesis D respiration
- Question 35
The Contact process is used to make sulfuric acid. The steps in the process are listed. 1 Dissolve sulfur trioxide in 98% concentrated sulfuric acid. 2 Heat sulfur strongly in air. 3 Add oleum to water. 4 Pass sulfur dioxide …
- Question 36
The fractional distillation of petroleum is shown. paraffin fraction gasoline fraction refinery gas diesel oil lubricating fraction petroleum bitumen Which fraction is the least volatile? A bitumen B diesel oil C gasoline fraction D refinery gas
- Question 37
Which statement about members of a homologous series is correct? A Successive members differ by CH3. B Successive members have a molecular mass that differs by 14. C They have the same molecular formula. D They have identical physical properties.
- Question 38
Ethanol is manufactured on a large scale by fermentation. Which statement about fermentation is correct? A It is a continuous process. B A renewable raw material is used. C It is a very fast reaction. D The ethanol produced is …
- Question 39
The structure of a compound, G, is shown. G is in the same homologous series as ethanoic acid. …
- Question 40
Which statement about polymers is correct? A Nylon contains the linkage. B Nylon is a polyester. C Propane can be polymerised by addition polymerisation. D The linkage in Terylene contains a carbon-carbon double bond. …
Other Chemistry papers from Feb/March 2019
- 0620/12 Multiple choice (Core)
- 0620/32 Theory (Core)
- 0620/42 Theory (Extended)
- 0620/62 Alternative to Practical