Cambridge IGCSE · 0620 · Paper 1 · Multiple choice (Core)
Chemistry 0620/11 Oct/Nov 2020 past paper
Cambridge IGCSE Chemistry (0620) Paper 1 (Multiple choice (Core)), variant 1, Oct/Nov 2020: 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
- 23
File names: 0620_w20_qp_11 · 0620_w20_ms_11
Grade thresholds for 0620/11 Oct/Nov 2020
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 |
|---|---|---|---|---|
| 23 | 20 | 18 | 15 | 12 |
Topics in this paper
Which syllabus chapters 0620/11 Oct/Nov 2020 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 0620/11 Oct/Nov 2020
- Question 1
‘The movement of a substance very slowly from an area of high concentration to an area of low concentration.’ Which process is being described? A a liquid being frozen B a solid melting C a substance diffusing through a liquid …
- Question 2
What happens to the average speed of gas particles when pressure and temperature are increased? average speed of particles pressure increases temperature increases A faster faster B unchanged slower C slower faster D unchanged faster
- Question 3
Which piece of apparatus can only measure a single fixed volume? A 250 cm3 beaker B 50 cm3 burette C 100 cm3 measuring cylinder D 25 cm3 pipette
- Question 4
In the chromatography experiment shown, which label represents the solvent front? …
- Question 5
Which substances can be separated by filtration? A insoluble liquid and water B insoluble solid and water C solution of soluble liquid in water D solution of soluble solid in water
- Question 6
An atom of element R contains 15 protons, 16 neutrons and 15 electrons. What is R? A gallium B phosphorus C sulfur D zinc
- Question 7
Which row describes the properties of potassium iodide, KI? type of bonding boiling point solid conducts electricity aqueous solution conducts electricity A covalent low no no B covalent high no yes C ionic high yes yes D ionic high no …
- Question 8
Which diagram represents a mixture of compounds? …
- Question 9
Rubidium is in Group I of the Periodic Table and bromine is in Group VII. Rubidium reacts with bromine to form an ionic compound. Which row shows the electron change taking place for rubidium and the correct formula of the …
- Question 10
Which statement explains why graphite is used as a lubricant? A All bonds between the atoms are weak. B It conducts electricity. C It has a low melting point. D Layers in the structure can slide over each other.
- Question 11
The equation for burning propane in air is shown. C3H8(g) + xO2(g) 3CO2(g) + yH2O(g) Which values of x and y balance the equation? …
- Question 12
The relative atomic mass of chlorine is 35.5. When calculating relative atomic mass, which particle is the mass of a chlorine atom compared to? A a neutron B a proton C an atom of carbon-12 D an atom of hydrogen-1
- Question 13
Concentrated aqueous sodium chloride is electrolysed using platinum electrodes. What is the major product formed at each electrode? anode cathode A chlorine hydrogen B chlorine sodium C oxygen hydrogen D oxygen sodium
- Question 14
Three substances are listed. 1 copper 2 dilute sulfuric acid 3 solid lead(II) bromide Which substances conduct electricity? …
- Question 15
Sodium nitrate is added to water in a beaker and stirred until it dissolves. At the end of the experiment, the beaker feels cold. Which row describes the reaction? temperature of solution type of reaction A decreases endothermic B decreases …
- Question 16
Which substance does not require oxygen in order to produce energy? A coal B hydrogen C natural gas D 235U
- Question 17
Which process involves a physical change? A heating calcium carbonate B burning wood C melting an ice cube D mixing an acid and a base
- Question 18
A sign displayed in a flour mill is shown. Explosion Hazard No Smoking No Open Flames DANGER Which statement explains why there is a danger of explosion in a flour mill? A Flour burns very quickly because it is a …
- Question 19
The graph shows the results of two experiments investigating the rate of reaction between excess calcium carbonate and dilute hydrochloric acid. In each experiment the volume of carbon dioxide produced is measured at fixed time intervals. experiment …
- Question 20
When pink crystals of cobalt(II) chloride are heated, steam is given off and the colour of the solid changes to blue. CoCl 2•6H2O CoCl …
- Question 21
In which change is the sulfur, S, in sulfur(I) oxide, S2O, reduced? SO3 SO2 S S2O SO …
- Question 22
What is a characteristic of acids? A Acids turn methyl orange indicator yellow. B Acids have a high pH value. C Acids react with ammonium salts to give ammonia gas. D Acids react with carbonates to produce salts.
- Question 23
Four different groups of oxides are shown. 1 MgO FeO CuO 2 CaO SO2 TiO2 3 PbO CaO Cl 2O 4 NO2 Br2O P2O5 Which statement about these oxides is correct? …
- Question 24
A student carries out an experiment to prepare pure magnesium sulfate crystals. The diagram shows the first stage of the preparation. dilute sulfuric acid stirrer magnesium carbonate He adds magnesium carbonate until no more reacts. Which process should he use …
- Question 25
Which ion produces a green precipitate when aqueous sodium hydroxide is added? A Cu2+ B Fe2+ C Fe3+ D Zn2+
- Question 26
The positions of four elements in the Periodic Table are shown. Which element is a gas that displaces iodine from sodium iodide? …
- Question 27
A flammable gas needs to be removed from a tank at an industrial plant. For safety reasons, an inert gas is used. Which gas is suitable? A argon B hydrogen C methane D oxygen
- Question 28
A substance, X, has the following properties. 1 It has a high melting point. 2 It conducts electricity in the solid and liquid states. 3 It is malleable. 4 It has a high density. What is …
- Question 29
A reactivity series is shown. sodium calcium magnesium carbon zinc iron hydrogen copper Which statement is correct? A All the metals above carbon are extracted by electrolysis. B Iron can only be extracted by electrolysis. C Calcium can be extracted …
- Question 30
What is the symbol of the metal used in the manufacture of aircraft because of its strength and low density? A Al B Cu C Fe D Zn
- Question 31
Oxides of nitrogen are given out from car exhausts. Which row best shows why oxides of nitrogen are unwanted in the atmosphere? acidic toxic A no no B no yes C yes no D yes yes
- Question 32
Two reactions, M and N, both form carbon dioxide. M N CaCO3 CO2 CH4 Which types of reaction are M and …
- Question 33
Which row describes two uses of sulfur dioxide? use 1 use 2 A bleaching paper pulp neutralising acidic industrial waste B bleaching paper pulp preserving food and drink C extracting iron from hematite neutralising acidic industrial waste D extracting iron …
- Question 34
Which statement about lime and limestone is correct? A Calcium oxide is formed from limestone in a displacement reaction. B Lime is used to treat alkaline soils. C Limestone is a waste material in the manufacture of iron. D Slaked …
- Question 35
Which compound has a chemical name ending in –ol ? A C2H5OH …
- Question 36
Petroleum is separated into fractions by fractional distillation. Separation occurs in a fractionating column. Some properties of three of these fractions are shown. fraction boiling point range / C number of carbon atoms in the molecules …
- Question 37
Which statement about alkenes is correct? A Alkenes are saturated hydrocarbons. B Alkenes can be made by cracking other hydrocarbon compounds. C Alkenes change bromine water from colourless to brown. D Alkene molecules contain double bonds between carbon atoms and …
- Question 38
The flow chart shows the preparation of ethanol and some important chemistry of ethanol. ethanol carbon dioxide + substance Z substance X process Y fermentation What are X, Y and …
- Question 39
Which statements about aqueous ethanoic acid are correct? 1 It is an alkane. 2 It reacts with sodium carbonate to form carbon dioxide. 3 It changes the colour of litmus solution from blue to red. 4 It is a hydrocarbon. …
- Question 40
Which substance is a polymer? A diamond B graphite C nylon D sodium chloride 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 …
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