Cambridge IGCSE · 0620 · Paper 1 · Multiple choice (Core)
Chemistry 0620/13 Oct/Nov 2021 past paper
Cambridge IGCSE Chemistry (0620) Paper 1 (Multiple choice (Core)), variant 3, Oct/Nov 2021: 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
- 21
File names: 0620_w21_qp_13 · 0620_w21_ms_13
Grade thresholds for 0620/13 Oct/Nov 2021
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 |
|---|---|---|---|---|
| 21 | 18 | 16 | 14 | 12 |
Topics in this paper
Which syllabus chapters 0620/13 Oct/Nov 2021 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 0620/13 Oct/Nov 2021
- Question 1
The particles in a substance are far apart, randomly arranged and moving. The substance changes state and the particles are now close together. The particles are still randomly arranged and able to move. What is the change of state of …
- Question 2
A student put exactly 25.00 cm3 of dilute hydrochloric acid into a conical flask. The student added 2.5 g of solid sodium carbonate and measured the change in temperature of the mixture. Which apparatus does the student need to use? …
- Question 3
A student separates sugar from pieces of broken glass by dissolving the sugar in water and filtering off the broken glass. filtrate What is the filtrate? A broken glass only B broken glass and sugar solution C pure water D …
- Question 4
The nucleus of a particular atom consists of nineteen particles. Nine of them are positively charged and ten of them are uncharged. Which statement about this nucleus is correct? A The nucleus has a nucleon number of nine. B The …
- Question 5
Which description of brass is correct? A alloy B compound C element D non-metal
- Question 6
A Group I element combines with a Group VII element and forms an ionic bond. Which row shows how the electronic structures change? Group I element Group VII element before bonding after bonding before bonding after bonding …
- Question 7
Four covalent compounds are listed. chlorine methane ammonia water Which row identifies the total number of covalent bonds in each compound? chlorine methane ammonia water …
- Question 8
Magnesium reacts with dilute hydrochloric acid to produce a salt and hydrogen gas. What is the equation for this reaction? A Mg + HCl MgCl …
- Question 9
The formula of sodium chlorate(V) is NaCl O3. What is the relative formula mass of sodium chlorate(V), NaCl …
- Question 10
Effervescence is observed at the negative electrode (cathode) during the electrolysis of concentrated aqueous sodium chloride. Which element is produced at the negative electrode (cathode)? A chlorine B hydrogen C oxygen D sodium
- Question 11
The energy level diagram for a chemical reaction is shown. energy progress of reaction reactants products Which statement about this reaction is correct? A The reaction is endothermic and energy is given out to the surroundings. B The reaction is …
- Question 12
Which property explains why methane is used as a fuel? A It is an alkane. B It forms carbon dioxide when it burns. C It is a gas at room temperature. D It releases heat energy when it burns.
- Question 13
Solid copper(II) carbonate reacts with dilute sulfuric acid. CuCO3 + H2SO4 CuSO4 + CO2 + H2O The rate of the reaction can be changed by varying the conditions. Which changes always increase the rate of this chemical reaction? 1 …
- Question 14
Magnesium carbonate and hydrochloric acid react to form a gas. The volume of gas is measured at fixed time intervals. In experiment 1, an excess of magnesium carbonate granules reacts with 100 cm3 of hydrochloric acid. The experiment is repeated …
- Question 15
Which colour change is observed when water is added to anhydrous cobalt(II) chloride? A blue to pink B pink to blue C blue to white D white to blue
- Question 16
The equation for the extraction of iron from its ore is shown. Fe2O3 + 3CO 2Fe + 3CO2 Which statement is correct? A Iron is oxidised. B Iron(III) oxide is oxidised. C Carbon monoxide is oxidised. D Carbon monoxide …
- Question 17
Solution X is tested separately with sodium carbonate and litmus. Which row shows that X is acidic? sodium carbonate litmus A effervescence blue B effervescence red C no change blue D no change red
- Question 18
Basic oxides are neutralised by acidic oxides. Which element forms an oxide that neutralises calcium oxide? A hydrogen B magnesium C sodium D sulfur
- Question 19
Which method produces a pure sample of copper(II) sulfate crystals? A Add an excess of copper(II) carbonate to dilute sulfuric acid, filter and evaporate the filtrate until crystals start to appear. B Add an excess of copper(II) carbonate to dilute …
- Question 20
Which statement about aqueous sodium hydroxide is correct? A When it is added to a solution containing sulfate ions, a white precipitate is formed. B When it is added to a solution of copper(II) ions, a blue precipitate is formed …
- Question 21
A period of the Periodic Table is shown. group I II III IV V VI VII VIII element …
- Question 22
Lithium, sodium and potassium are elements in Group I of the Periodic Table. Which statement about sodium is correct? A Sodium is more dense than potassium. B Sodium reacts with water more vigorously than lithium. C Sodium has a lower …
- Question 23
Which property of transition elements is different from the properties of Group I metals? A They conduct electricity. B They are malleable. C They form coloured compounds. D They form basic oxides.
- Question 24
The noble gases are in Group VIII of the Periodic Table. Which statement explains why noble gases are unreactive? A They all have eight electrons in their outer shells. B They all have full outer shells. C They are all …
- Question 25
Which statement is correct for all metals? A They conduct electricity when molten. B They gain electrons when they form ions. C They have a low density. D They have a low melting point.
- Question 26
Chromium is a more reactive metal than iron but less reactive than zinc. Which statements are correct? 1 Chromium does not react with dilute hydrochloric acid. 2 Chromium oxide is reduced when it is heated with carbon. 3 Chromium reacts …
- Question 27
Some properties of copper are listed. 1 It conducts electricity. 2 It conducts heat. 3 It is ductile. 4 It has a high melting point. Which properties of copper make it useful as a cooking pan? A 1 and …
- Question 28
The diagrams show some uses of water in the home. …
- Question 29
Which gas is released when slaked lime, Ca(OH)2, is added to a field that has previously been treated with ammonium sulfate fertiliser? A ammonia B carbon dioxide C nitrogen D sulfur dioxide
- Question 30
Which reactions produce carbon dioxide? 1 heating a carbonate 2 reacting a carbonate with dilute acid 3 burning methane 4 cracking a hydrocarbon …
- Question 31
Sulfur burns to make sulfur dioxide. Which row describes a source of sulfur and a use of sulfur dioxide? source of sulfur use of sulfur dioxide A the air food preservative B the air treating acidic soils C underground deposits …
- Question 32
Lime (calcium oxide) is used to treat waste water from a factory. Which substance is removed by the lime? A ammonia B sodium chloride C sodium hydroxide D sulfuric acid
- Question 33
The structures of three chemical compounds are shown. …
- Question 34
Fuel X produces carbon dioxide and water when it is burned in air. So does fuel Y. What could X and Y be? …
- Question 35
What is the main constituent of natural gas? A hydrogen B carbon monoxide C methane D nitrogen
- Question 36
Which statement describes the members of a homologous series? A compounds with the same physical properties B compounds containing the same functional group C compounds containing the same number and type of bonds D compounds obtained from the same raw …
- Question 37
Which monomer molecules are used to make poly(ethene)? …
- Question 38
Ethanol is manufactured by the catalytic addition of steam to compound P. What is P? A ethane B ethene C methane D yeast
- Question 39
Which property is shown by aqueous ethanoic acid? A It reacts with magnesium to form water. B It turns red litmus blue. C It reacts with copper to form hydrogen gas. D It reacts with copper(II) carbonate to form carbon …
- Question 40
Which statement about polymers is correct? A All synthetic polymers rapidly break down in landfill sites. B Nylon is a natural polymer. C Proteins are non-biodegradable natural polymers. D Synthetic polymers are harmful to marine life. Group The Periodic Table …
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