Cambridge IGCSE · 0620 · Paper 1 · Multiple choice (Core)
Chemistry 0620/13 May/June 2021 past paper
Cambridge IGCSE Chemistry (0620) Paper 1 (Multiple choice (Core)), variant 3, May/June 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
- 20
File names: 0620_s21_qp_13 · 0620_s21_ms_13
Grade thresholds for 0620/13 May/June 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 |
|---|---|---|---|---|
| 20 | 17 | 15 | 13 | 11 |
Topics in this paper
Which syllabus chapters 0620/13 May/June 2021 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 0620/13 May/June 2021
- Question 1
A 1 cm3 sample of substance X is taken. This is sample 1. X is then converted to a different physical state and a 1 cm3 sample is taken. This is sample 2. Sample 2 contains more particles in the …
- Question 2
Solid carbon dioxide changes directly into a gas under suitable conditions of temperature and pressure. Carbon dioxide gas moves from a high concentration to a low concentration. Which row names these two processes? changing from solid to gas moving from …
- Question 3
Which statement about paper chromatography is correct? A A solvent is needed to dissolve the paper. B Paper chromatography separates mixtures of solvents. C The solvent should cover the baseline. D The baseline should be drawn in pencil.
- Question 4
Element X has 7 protons. Element Y has 8 more protons than X. Which statement about element Y is correct? A Y has more electron shells than …
- Question 5
A covalent molecule Q contains only six shared electrons. What is Q? A ammonia, NH3 B chlorine, Cl 2 C methane, CH4 D water, H2O
- Question 6
Which piece of apparatus is used to measure exactly 25.00 cm3 of hydrochloric acid? A beaker B measuring cylinder C pipette D balance
- Question 7
Which statement about isotopes of the same element is correct? A They have different numbers of electrons. B They have different numbers of neutrons. C They have different numbers of protons. D They have the same mass number.
- Question 8
Potassium reacts with iodine to form an ionic compound. …
- Question 9
What is the relative formula mass of magnesium nitrate, Mg(NO3)2? …
- Question 10
In separate experiments, electricity was passed through concentrated aqueous sodium chloride and molten lead(II) bromide. What would happen in both experiments? A A halogen would be formed at the anode. B A metal would be formed at the cathode. C …
- Question 11
The equation for the decomposition of calcium carbonate is shown. CaCO3 CaO + CO2 What mass of calcium oxide is produced when 10 g of calcium carbonate is heated? …
- Question 12
Heat energy transfer during chemical reactions can be described using energy level diagrams. In which row is the description correct? energy level diagram description 1 progress of reaction energy exothermic 2 progress of reaction energy heat energy absorbed from environment …
- Question 13
The equations for two reactions are shown. 1 CH4 …
- Question 14
When sulfur is heated it undergoes a 1 change as it melts. Further heating causes the sulfur to undergo a 2 change and form sulfur dioxide. Which words complete gaps 1 and …
- Question 15
Copper(II) carbonate reacts with dilute sulfuric acid. Which conditions produce the fastest rate of reaction? form of copper(II) carbonate temperature of dilute sulfuric acid …
- Question 16
Hydrated copper(II) sulfate is blue. When it is heated it forms white anhydrous copper(II) sulfate. How is a sample of anhydrous copper(II) sulfate changed into hydrated copper(II) sulfate? A Water is added. B It is cooled down. C It is …
- Question 17
Copper(II) oxide reacts with iron. The equation for the reaction is shown. 3CuO + 2Fe 3Cu + Fe2O3 Why can this reaction be described as the reduction of copper(II) oxide? A Iron gains oxygen. B The copper(II) oxide loses …
- Question 18
Element X forms an oxide, XO, that neutralises sulfuric acid. Which row describes X and XO? element X nature of oxide, XO A metal acidic B metal basic C non-metal acidic D non-metal basic
- Question 19
Which methods of salt preparation are suitable for copper(II) chloride? 1 Add copper(II) carbonate to dilute hydrochloric acid. 2 Add copper to dilute hydrochloric acid. 3 Warm copper(II) oxide with dilute hydrochloric acid. …
- Question 20
A white solid, J, is tested and the observations are shown. test observations flame test red flame acidify with nitric acid then add aqueous silver nitrate white precipitate What is J? A lithium bromide B lithium chloride C sodium bromide …
- Question 21
Which statement about the Periodic Table is not correct? A Elements in the same period have similar properties. B It can be used to predict the properties of elements. C Non-metals are found on the right side of the table. …
- Question 22
Bromine and iodine are elements in Group VII of the Periodic Table. Which statement about these elements is correct? A Iodine displaces bromide ions from solution. B Bromine is a lighter colour than iodine. C Bromine is more dense than …
- Question 23
Helium and neon exist as monoatomic gases at room temperature and pressure. statement 1 Helium and neon have eight electrons in their outer shell. statement 2 Helium and neon are unreactive. Which option is correct? A Statement 1 and statement …
- Question 24
An element melts at 1455 C, has a density of …
- Question 25
Which statement about the reactivity of metals is correct? A Iron is more reactive than magnesium. B Copper reacts with dilute hydrochloric acid. C Potassium reacts with cold water. D Calcium oxide is reduced more easily than iron oxide.
- Question 26
Iron from a blast furnace is treated with oxygen and with calcium oxide to make steel. Which substances in the iron are removed? oxygen removes calcium oxide removes A carbon acidic oxides B carbon basic oxides C iron acidic oxides …
- Question 27
Water is removed from reservoirs and undergoes several stages of treatment to make it suitable for drinking. Which statements about the stages are correct? 1 Chlorine is added to the water to kill harmful bacteria. 2 Water is heated to …
- Question 28
Which gas is an air pollutant that causes acid rain? A argon B carbon monoxide C methane D nitrogen dioxide
- Question 29
An NPK fertiliser is made by mixing two compounds. The first compound has the formula (NH4)2HPO4. What is the formula of the second compound? A CaCO3 B KNO3 C NaCl D (NH4)2SO4
- Question 30
Which reaction does not occur during the extraction of iron from hematite in a blast furnace? …
- Question 31
Which row describes the uses of sulfur and sulfur dioxide? sulfur sulfur dioxide A extraction of aluminium food preservative B extraction of aluminium manufacture of cement C manufacture of sulfuric acid food preservative D manufacture of sulfuric acid manufacture of …
- Question 32
Metal X is a good conductor of electricity and is used for electrical wiring. Metal Y is used to make an alloy which is resistant to corrosion and is used to make cutlery. Metal Z is light and strong and …
- Question 33
Which statement about calcium carbonate is correct? A It is made by the thermal decomposition of limestone. B It is used to neutralise alkaline soils. C It is a reactant in the test for carbon dioxide. D It is used …
- Question 34
What is the main constituent of natural gas? A hydrogen B methane C nitrogen D oxygen
- Question 35
Which compounds belong to the same homologous series? A ethane and propane B ethanoic acid and ethanol C methane and ethene D propene and ethanoic acid
- Question 36
Which statement about alkanes is correct? A They burn in oxygen. B They contain carbon, hydrogen and oxygen atoms. C They contain double bonds. D They contain ionic bonds.
- Question 37
P, Q, R and S are organic compounds. P is formed by reacting ethene with steam. Q decolourises bromine water. R is a hydrocarbon; all of its bonds are single covalent bonds. S is a waste product from digestion in …
- Question 38
Which row describes how ethanol is used? fuel solvent A no no B no yes C yes no D yes yes
- Question 39
Which diagram shows the conversion of ethene into ethanol? …
- Question 40
Which substance is a natural polymer? A ethene B Terylene C nylon D protein Group The Periodic Table of Elements 1 H hydrogen 1 2 He helium 4 I II III IV V VI VII VIII 3 Li lithium 7 …
Other Chemistry papers from May/June 2021
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