Cambridge IGCSE · 0620 · Paper 1 · Multiple choice (Core)
Chemistry 0620/12 Feb/March 2023 past paper
Cambridge IGCSE Chemistry (0620) Paper 1 (Multiple choice (Core)), variant 2, Feb/March 2023: 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
- 22
File names: 0620_m23_qp_12 · 0620_m23_ms_12
Grade thresholds for 0620/12 Feb/March 2023
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 |
|---|---|---|---|---|
| 22 | 20 | 18 | 16 | 14 |
Topics in this paper
Which syllabus chapters 0620/12 Feb/March 2023 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 0620/12 Feb/March 2023
- Question 1
The arrangements of particles in solids, liquids and gases are different. Which statement about the molecules in ice, water or steam is correct? A The H2O molecules are on average closest together in steam. B The H2O molecules are on …
- Question 2
The melting points and boiling points of three elements, at 1 atm pressure, are shown. melting point / C boiling point / C argon –189 –186 nitrogen –210 –196 oxygen –218 –183 Separate samples of argon, nitrogen and oxygen are …
- Question 3
Which statement describes a compound? A It contains two or more elements chemically combined. B It contains two or more elements physically combined. C It contains two or more elements forming an alloy. D It contains two or more elements …
- Question 4
Which statement about elements in the Periodic Table is correct? A A potassium ion, K+, has the same electronic configuration as a chloride ion, Cl –. B The electronic configuration of a Ca2+ ion is 2,8,8,2. C The halogens are …
- Question 5
Which statement about ions and ionic bonds is correct? A Bromine atoms form negatively charged bromide ions. B Ionic bonds form between elements in Group VII of the Periodic Table. C Positive ions are formed when atoms lose protons. D …
- Question 6
Which molecule has only two shared pairs of electrons? A CH4 B Cl 2 C HCl D H2O
- Question 7
Which statement about graphite explains why it is used as an electrode? A It contains ions. B It has a giant covalent structure. C It is a metal. D It has mobile electrons.
- Question 8
Methane, CH4, burns in air to form carbon dioxide and water. What is the balanced equation for this reaction? A CH4(g) …
- Question 9
Magnesium reacts with steam. Mg …
- Question 10
The diagram shows an electrolysis circuit. At which electrode is hydrogen formed? …
- Question 11
Which gases are used to generate electricity in a fuel cell? A carbon dioxide and oxygen B hydrogen and methane C hydrogen and oxygen D methane and carbon dioxide
- Question 12
The reaction pathway diagram for a reaction is shown. energy progress of reaction reactants products Which statements about the reaction are correct? 1 The reaction is endothermic. 2 The reaction is exothermic. 3 The diagram represents the combustion of methane. …
- Question 13
Which row describes a chemical change? new substances are made there is a change of state A always always B always sometimes C never always D never sometimes
- Question 14
Magnesium powder reacts with an excess of dilute hydrochloric acid to produce hydrogen gas. Which statements about this reaction are correct? 1 The smaller the particles of magnesium powder, the more slowly the hydrogen is produced. 2 The higher the …
- Question 15
Which statement about hydrated cobalt(II) chloride is correct? A It turns blue when it is heated. B It turns blue when water is added to it. C It turns pink when water is added to it. D It turns white …
- Question 16
An aqueous solution reacts with a solid. The products are an alkaline gas, a salt and water. What are the aqueous solution and the solid? aqueous solution solid A sodium hydroxide magnesium carbonate B hydrochloric acid magnesium carbonate C hydrochloric …
- Question 17
Both calcium oxide, CaO, and calcium hydroxide, Ca(OH)2, are used to remove sulfur dioxide, SO2, from flue gases in industrial plants. Which row classifies calcium oxide, calcium hydroxide and sulfur dioxide? calcium oxide calcium hydroxide sulfur dioxide A acidic acidic …
- Question 18
Copper(II) sulfate is prepared by adding excess copper(II) carbonate to sulfuric acid. Why is an excess of copper(II) carbonate added? A to ensure all the copper(II) carbonate has reacted B to ensure all the sulfuric acid has reacted C to …
- Question 19
Part of the Periodic Table is shown. Which element has two electrons in its outer shell and three electron shells? …
- Question 20
Some information about element X is given. ● melting point …
- Question 21
The properties of the element titanium, Ti, can be predicted from its position in the Periodic Table. Which row identifies the properties of titanium? can be used as a catalyst conducts electricity when solid has low density forms coloured compounds …
- Question 22
Which description of brass is correct? A a compound of copper and zinc B a compound of copper and tin C a mixture of copper and zinc D a mixture of copper and tin
- Question 23
What is the symbol of the metal used in the manufacture of aircraft because of its low density? A Al B Cu C Fe D Zn
- Question 24
Which property of stainless steel makes it suitable for making cutlery? A It conducts electricity. B It has a high melting point. C It is resistant to rusting. D It is ductile.
- Question 25
Which substances react to form hydrogen gas? 1 calcium and water 2 silver and dilute hydrochloric acid 3 magnesium and steam 4 zinc and dilute hydrochloric acid …
- Question 26
Some statements about the reactions of the metals tin, lithium and manganese are listed. ● Tin does not react with steam but does react with dilute hydrochloric acid. ● Lithium reacts with cold water. ● Manganese does not react with …
- Question 27
Which substances are required for iron to rust? A oxygen and salt B oxygen only C water and oxygen D water and salt
- Question 28
Coke (carbon) and limestone are two raw materials used in the extraction of iron from hematite. Which type of reaction occurs when each substance is heated during the process? coke limestone A redox redox B redox thermal decomposition C thermal …
- Question 29
Water is treated at a waterworks to make it safe to drink. What is present in the water when it leaves the waterworks? A bacteria and insoluble substances B bacteria only C soluble substances, including chlorine compounds D chlorine compounds …
- Question 30
The formulae of four compounds, …
- Question 31
Some combustion reactions produce pollutant gases. Which reactions produce a pollutant gas that is not present in clean air? 1 2CH4 …
- Question 32
Which row identifies the homologous series to which the molecular structure belongs? molecular structure homologous series …
- Question 33
Petroleum is fractionally distilled at an oil refinery. The table shows some fractions and uses. fraction use 1 gasoline fuel for ships 2 refinery gas lubrication 3 naphtha making chemicals 4 kerosene jet fuel Which rows identify a use for …
- Question 34
What is the word equation for the preparation of ethanol? A glucose ethanol + carbon dioxide B glucose + yeast ethanol + water C ethane + water ethanol D ethene + water ethanol + carbon dioxide
- Question 35
Which row describes properties of aqueous ethanoic acid? pH effect of adding magnesium effect of adding sodium carbonate A 1 reacts to form hydrogen reacts to form carbon dioxide and water only B 4 reacts to form hydrogen reacts to …
- Question 36
Which row describes the relative sizes of monomer and polymer molecules? monomer polymer A large large B large small C small large D small small
- Question 37
2.00 g of powdered calcium carbonate is added to 50.0 cm3 of hydrochloric acid. Which apparatus is used to measure these quantities of calcium carbonate and hydrochloric acid? calcium carbonate hydrochloric acid A balance burette B balance thermometer C pipette …
- Question 38
The diagram shows a chromatogram obtained from the colours of three different sweets, X, Y and Z. sweet X red yellow sweet Y red yellow sweet Z red red yellow How many different red dyes are present in the sweets? …
- Question 39
A mixture contains sand and an aqueous solution of sodium chloride. Which processes are used to obtain a sample of solid sand and a sample of solid sodium chloride from the mixture? A crystallisation followed by filtration B evaporation followed …
- Question 40
A student tests an unknown compound M. The compound: ● produces a lilac flame using a flame test ● produces a gas which turns limewater cloudy when dilute hydrochloric acid is added. What is M? A sodium sulfate B sodium …
Other Chemistry papers from Feb/March 2023
- 0620/22 Multiple choice (Extended)
- 0620/32 Theory (Core)
- 0620/42 Theory (Extended)
- 0620/62 Alternative to Practical