Cambridge IGCSE · 0620 · Paper 1 · Multiple choice (Core)
Chemistry 0620/12 Feb/March 2021 past paper
Cambridge IGCSE Chemistry (0620) Paper 1 (Multiple choice (Core)), 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
- 21
File names: 0620_m21_qp_12 · 0620_m21_ms_12
Grade thresholds for 0620/12 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 |
|---|---|---|---|---|
| 21 | 18 | 15 | 13 | 11 |
Topics in this paper
Which syllabus chapters 0620/12 Feb/March 2021 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 0620/12 Feb/March 2021
- Question 1
In which changes do the particles move further apart? W X gas liquid solid …
- 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
Impurities change the melting and boiling points of substances. Sodium chloride is added to a sample of pure water. How does the addition of sodium chloride affect the melting point and the boiling point of the water? melting point boiling …
- Question 4
The apparatus used to separate a mixture of sand, methanol and ethanol is shown. …
- Question 5
A neutral atom, J, contains 45 neutrons and 35 electrons. Which row is correct for atom J? proton number nucleon number …
- 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
Which definition of isotopes is correct? A atoms of the same element that have the same number of electrons and nucleons B atoms of the same element that have the same number of neutrons and protons C atoms of the …
- Question 8
In which molecule are all the outer shell electrons from each atom used to form covalent bonds? A CH4 B Cl …
- Question 9
What is the balanced chemical equation for the reaction between calcium and water? A Ca …
- 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
Three substances are electrolysed using inert electrodes. Which substances produce hydrogen at the negative electrode? 1 concentrated hydrochloric acid 2 concentrated aqueous sodium chloride 3 dilute sulfuric acid …
- 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
Fuels release heat energy when they burn. Which substances are used as fuels? 1 argon 2 butane 3 hydrogen 4 methane A 1 and 3 only …
- Question 15
When zinc carbonate is mixed with dilute hydrochloric acid a change, M, takes place. When carbon is heated with copper(II) oxide a change, N, takes place. Which row describes changes M and …
- 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
Which property is shown by the alkali sodium hydroxide? A It has a pH less than pH 7. B It produces a gas when it is warmed with ammonium chloride. C It turns blue litmus red. D It turns universal …
- 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 describe the Periodic Table? 1 The elements are arranged in order of their nucleon number. 2 The elements are arranged in order of their proton number. 3 It is used to predict the properties of elements. A 1 …
- Question 22
Which row shows how the properties of the Group I elements change on descending the group? density melting point reactivity A decreases increases increases B decreases increases decreases C increases decreases increases D increases decreases decreases
- Question 23
Copper is a transition element. Two compounds of copper are copper(II) oxide and copper(II) carbonate. Which row describes the two compounds? copper(II) oxide colour of copper(II) carbonate A acidic green B acidic white C basic green D basic white
- 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
Pure iron is a soft metal. When mixed with small amounts of tungsten it produces a hard alloy called tungsten steel. Which statements are correct? 1 Pure iron is a transition element. 2 The particles in pure iron are arranged …
- Question 26
Which row describes magnesium? electrical conductivity reacts with dilute acid A low no B low yes C high no D high yes
- Question 27
- Question 28
Copper is used to make saucepans. Which properties of copper make it suitable for this use? 1 Copper has a relatively high melting point. 2 Copper has a low density. 3 Copper is a good conductor of electricity. 4 Copper …
- Question 29
Which pollutants are responsible for the erosion of buildings and statues? 1 carbon monoxide 2 oxides of nitrogen 3 sulfur dioxide …
- Question 30
Which combination of chemical compounds can be used to produce the fertiliser shown? SUPERGROW …
- Question 31
X is produced when petrol burns completely in air. What is X? A argon B carbon dioxide C carbon monoxide D hydrogen
- 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
Which product is formed when calcium carbonate undergoes thermal decomposition? A calcium B calcium hydroxide C calcium oxide D calcium silicate
- Question 35
The pie chart represents the composition of natural gas. Which sector represents methane? …
- Question 36
Which fraction, obtained from petroleum, is used for jet fuel? A bitumen B gasoline C kerosene D naphtha
- Question 37
The formula of a hydrocarbon is CxHy. The equation for its complete combustion is shown. CxHy …
- Question 38
Pentane is an alkane and pentene is an alkene. What is observed when bromine water is added to a sample of each compound? pentane pentene A becomes colourless becomes colourless B becomes colourless remains unchanged C remains unchanged becomes colourless …
- 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 substance has long-chain molecules and is a constituent of food? A carbohydrate B nylon C poly(ethene) D Terylene Group The Periodic Table of Elements 1 H hydrogen 1 2 He helium 4 I II III IV V VI VII …
Other Chemistry papers from Feb/March 2021
- 0620/22 Multiple choice (Extended)
- 0620/32 Theory (Core)
- 0620/42 Theory (Extended)
- 0620/62 Alternative to Practical