Cambridge IGCSE · 0620 · Paper 2 · Multiple choice (Extended)
Chemistry 0620/22 Feb/March 2021 past paper
Cambridge IGCSE Chemistry (0620) Paper 2 (Multiple choice (Extended)), variant 2, Feb/March 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
- 26
File names: 0620_m21_qp_22 · 0620_m21_ms_22
Grade thresholds for 0620/22 Feb/March 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 | F | G |
|---|---|---|---|---|---|---|
| 26 | 22 | 19 | 17 | 15 | 13 | 11 |
Topics in this paper
Which syllabus chapters 0620/22 Feb/March 2021 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 0620/22 Feb/March 2021
- Question 1
Which row about a change of state is correct? change of state energy change process A solid liquid heat given out melting B gas liquid heat taken in evaporation C solid gas heat taken in sublimation D …
- Question 2
Gases are separated from liquid air by fractional distillation. The boiling points of four gases are shown. Which gas is both monoatomic and a liquid at –200 C? gas boiling point …
- Question 3
Two different food colourings, X and Y, are tested using chromatography. Three pure dyes, 1, 2 and 3, are also tested. The chromatogram is shown. …
- Question 4
Which statement about the atoms of all the isotopes of carbon is correct? A They are all radioactive. B They have the same mass. C They have the same number of neutrons. D They have the same number of electrons …
- Question 5
Which diagram represents the structure of silicon(IV) oxide? …
- Question 6
Lithium and fluorine react to form lithium fluoride. A student writes three statements about the reaction. 1 Lithium atoms lose an electron when they react. 2 Each fluoride ion has one more electron than a fluorine atom. 3 Lithium fluoride …
- Question 7
How many electrons are used to form covalent bonds in a molecule of methanol, CH3OH? …
- Question 8
Magnesium oxide has a high melting point. Carbon dioxide has a low melting point. Which row identifies the attractive forces that are broken when these compounds are melted? magnesium oxide carbon dioxide A strong attractions between molecules weak attractions between …
- Question 9
The ionic half-equation for the formation of oxygen during the electrolysis of aluminium oxide is shown. …
- Question 10
A compound has the formula XF2 and has a relative mass of 70. What is element X? A gallium B germanium C sulfur D ytterbium
- Question 11
The diagram shows a section of an overhead power cable. aluminium steel ceramic Which statement explains why a particular substance is used? A Aluminium has a low density and is a good conductor of electricity. B Ceramic is a good …
- Question 12
During the electrolysis of dilute sulfuric acid, hydrogen is collected at the cathode. What is the ionic half-equation for this reaction? …
- Question 13
Which row describes an endothermic reaction? energy level diagram energy transfer A energy progress of reaction energy is transferred from the surroundings to the reaction B energy progress of reaction energy is transferred from the surroundings to the reaction C …
- Question 14
The equation for the complete combustion of methane is shown. CH4(g) …
- Question 15
Hydrogen fuel cells can be used to power cars. Which statements about a fuel cell are correct? 1 The balanced equation for the reaction is …
- Question 16
The apparatus shown is used to measure the rate of a reaction. gas syringe reactants Which equation represents a reaction where the rate can be measured using this apparatus? A Mg(s) + 2HCl (aq) MgCl 2(aq) …
- Question 17
P is a hydrated metal salt with a blue colour. When P is heated, water is given off, leaving solid Q. R is a hydrated metal salt with a pink colour. When R is heated, water is given off, leaving …
- Question 18
Magnesium reacts with copper(II) oxide to give magnesium oxide and copper. Which substance is the oxidising agent in this reaction? A copper B copper(II) oxide C magnesium D magnesium oxide
- Question 19
Part of the Periodic Table is shown. Which element forms an acidic oxide? …
- Question 20
When aqueous sodium hydroxide is added to a solution of a metal ion, a grey-green precipitate forms, which dissolves in excess to form a dark green solution. What is the identity of the metal ion? A chromium(III) B iron(II) C …
- Question 21
Which statements about strong acids are correct? 1 They have a high concentration of OH– ions. 2 They have a pH value of 1. 3 They completely ionise in water. 4 They turn red litmus blue. A 1 and …
- Question 22
Metal X reacts with non-metal Y to form an ionic compound with the formula X2Y. Which statements are correct? 1 X is in Group I of the Periodic Table. 2 X is in Group II of the Periodic Table. 3 …
- Question 23
The table gives some properties of Group IV elements. element 3 density g/cm boiling point / C carbon 2.2 4827 silicon germanium 5.3 2830 tin 5.8 2270 lead 11.3 1755 Which row describes the properties of silicon? 3 density g/cm …
- Question 24
The metal beryllium does not react with cold water. It reacts with hydrochloric acid but cannot be extracted from its ore by using carbon. Where is beryllium placed in the reactivity series? magnesium A zinc B iron C copper D
- Question 25
Why is cryolite used in the extraction of aluminium from bauxite? A as a catalyst for the process B as a solvent for aluminium oxide C it stops the carbon anodes burning away D it reduces aluminium ions in aluminium …
- Question 26
Which statements about the uses of metals are correct? 1 Iron is used to make aircraft because iron has a low density. 2 Copper is used to make electric cables because copper is a good conductor of electricity. 3 Aluminium …
- Question 27
Which row describes the reactions of magnesium hydroxide and magnesium oxide? effect of heat on hydroxide effect of heating oxide with carbon A forms magnesium oxide magnesium and carbon dioxide formed B forms magnesium oxide no reaction C no reaction …
- Question 28
The properties of an element are listed. Its melting point is 3414 C. Some of its compounds are catalysts. It has variable oxidation states. Where is the element found in the Periodic Table? A alkali metals B halogens C noble …
- Question 29
Petrol burns in a car engine to produce waste gases which leave through the car exhaust. One of these waste gases is an oxide of nitrogen. Which statement describes how this oxide of nitrogen is formed? A Carbon dioxide reacts …
- Question 30
Which combination of chemical compounds can be used to produce the fertiliser shown? SUPERGROW …
- Question 31
Which process does not produce carbon dioxide? A combustion of a hydrocarbon B photosynthesis C reaction between an acid and a metal carbonate D respiration
- Question 32
Which substance is used as a bleach in the manufacture of paper? A carbon dioxide B nitrogen dioxide C silicon dioxide D sulfur dioxide
- Question 33
What is an industrial use of calcium carbonate? A cracking of hydrocarbons B manufacture of aluminium C manufacture of cement D purification of water
- Question 34
Propane reacts with chlorine. Which row shows a condition required for this reaction and identifies the type of reaction? condition type of reaction A phosphoric acid catalyst addition B phosphoric acid catalyst substitution C ultraviolet light addition D ultraviolet light …
- Question 35
The pie chart represents the composition of natural gas. Which sector represents methane? …
- Question 36
Which statement describes the reaction between ethene and steam? A a cracking reaction which produces ethane and hydrogen gas as products B an addition reaction which produces ethanol as the only product C an oxidation reaction which produces ethanoic acid …
- Question 37
The formula of a hydrocarbon is CxHy. The equation for its complete combustion is shown. CxHy …
- Question 38
The formula of an ester is CH3CH2CH2COOCH2CH2CH3. Which acid and alcohol react together to make the ester? acid alcohol A butanoic acid butanol B butanoic acid propanol C propanoic acid butanol D propanoic acid propanol
- Question 39
Molecule 1 undergoes a process to make molecule 2. process molecule 1 molecule 2 Which row describes the molecules and the process? molecule 1 process molecule 2 A monomer cracking polymer B monomer polymerisation polymer C small molecule polymerisation monomer …
- Question 40
Which structure represents a protein? …
Other Chemistry papers from Feb/March 2021
- 0620/12 Multiple choice (Core)
- 0620/32 Theory (Core)
- 0620/42 Theory (Extended)
- 0620/62 Alternative to Practical