Cambridge IGCSE · 0620 · Paper 2 · Multiple choice (Extended)
Chemistry 0620/21 May/June 2016 past paper
Cambridge IGCSE Chemistry (0620) Paper 2 (Multiple choice (Extended)), variant 1, May/June 2016: the question paper and its official mark scheme, 40 questions, with the grade thresholds. Free to open, no account needed.
- Questions
- 40
- Marks
- 40
- Grade A from
- 25
File names: 0620_s16_qp_21 · 0620_s16_ms_21
Grade thresholds for 0620/21 May/June 2016
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 |
|---|---|---|---|---|---|---|
| 25 | 22 | 19 | 15 | 12 | 10 | 8 |
Topics in this paper
Which syllabus chapters 0620/21 May/June 2016 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 0620/21 May/June 2016
- Question 1
The rate of diffusion of two gases, methane, CH4, and ethene, C2H4, is measured using the apparatus shown. constant pressure applied gas syringe gas metal foil – gas escapes through small hole in the foil Which gas diffuses faster and …
- Question 2
A sample of a dye is investigated by chromatography. A line is drawn across a piece of chromatography paper and a spot of the dye is placed on it. The paper is placed in water. water chromatography paper line spot …
- Question 3
The paper chromatogram below was obtained from four different dyes. Which dye has an Rf value of …
- Question 4
Which statements about isotopes of the same element are correct? 1 They are atoms which have the same chemical properties because they have the same number of electrons in their outer shell. 2 They are atoms which have the same …
- Question 5
The table shows the electronic structure of four atoms. atom electronic structure …
- Question 6
Which statement describes the attractive forces between molecules (intermolecular forces)? A They are strong covalent bonds which hold molecules together. B They are strong ionic bonds which hold molecules together. C They are weak forces formed between covalently-bonded molecules. D …
- Question 7
The diagram represents the general structure of a solid …
- Question 8
A compound, X, contains 40.0% carbon, 6.7% hydrogen and 53.3% oxygen by mass. The relative molecular mass, Mr, of X is 60. What is the molecular formula of X? A CH2O B CH4O …
- Question 9
25 cm3 of 0.1 mol / dm3 hydrochloric acid exactly neutralise 20 cm3 of aqueous sodium hydroxide. The equation for this reaction is: NaOH + HCl → NaCl + H2O What is the concentration of the sodium hydroxide solution? A …
- Question 10
Which reactions could take place at the anode during electrolysis? 1 4OH–(aq) …
- Question 11
The diagram shows some properties that substances may have. To which labelled part of the diagram does 235U belong? compound used as an energy source radioactive …
- Question 12
The diagram shows a simple cell. voltmeter copper electrode zinc electrode electrolyte V Which statement about the process occurring when the cell is in operation is correct? A Cu2+ ions are formed in solution. B Electrons travel through the solution. …
- Question 13
Hydrogen burns exothermically in oxygen. The equation for the reaction is: …
- Question 14
A liquid X reacts with solid Y to form a gas. Which two diagrams show suitable methods for investigating the rate (speed) of the reaction? …
- Question 15
Which statements explain why increasing temperature increases the rate of a chemical reaction? 1 Heat makes the molecules move faster and collide more often. 2 Heat makes the molecules collide with more energy so they are more likely to react. …
- Question 16
Steam reacts with carbon in an endothermic reaction. …
- Question 17
Which equation represents a reduction reaction? A Fe2+ …
- Question 18
Which statements are properties of an acid? 1 reacts with ammonium sulfate to form ammonia 2 turns red litmus blue …
- Question 19
Which row describes whether an amphoteric oxide reacts with acids and bases? reacts with acids reacts with bases A no no B no yes C yes no D yes yes
- Question 20
Which substance reacts with dilute sulfuric acid to form a salt that can be removed from the resulting mixture by filtration? A aqueous barium chloride B aqueous sodium hydroxide C copper D copper(II) carbonate
- Question 21
Where in the Periodic Table is the metallic character of the elements greatest? left or right side of a period at the top or bottom of a group A left bottom B left top C right bottom D right top
- Question 22
Some properties of four elements, …
- Question 23
Which of the following could be a transition element? melting point in °C density in g / cm3 colour electrical conductor …
- Question 24
Two statements about argon are given. 1 Argon has a full outer shell of electrons. 2 Argon is very reactive and is used in lamps. Which is correct? A Both statements are correct and statement 2 explains statement 1. B …
- Question 25
A student investigated the reactions of four metals, …
- Question 26
Three students, X, Y and Z, were told that solid P reacts with dilute acids and also conducts electricity. The table shows the students’ suggestions about the identity of …
- Question 27
Which statement about the uses of metals is correct? A Aluminium is used in the manufacture of aircraft because of its strength and high density. B Copper is used in electrical wiring because of its strength and high density. C …
- Question 28
Aluminium is manufactured by electrolysis of aluminium oxide. The diagram shows the electrolysis cell. molten aluminium aluminium oxide in molten cryolite cathode anode + + Which statement about the process is not correct? A Aluminium ions gain electrons during the …
- Question 29
The diagram shows an experiment to investigate how paint affects the rusting of iron. air P Q water iron painted iron What happens to the water level in tubes P and Q? tube P tube Q A falls rises B …
- Question 30
A new planet has been discovered and its atmosphere has been analysed. atmosphere planet The table shows the composition of its atmosphere. gas percentage by volume carbon dioxide 4 nitrogen 72 oxygen 24 Which gases are present in the atmosphere …
- Question 31
Many car exhaust systems contain a catalytic converter. Which change does not occur in a catalytic converter? A carbon dioxide → carbon B carbon monoxide → carbon dioxide C nitrogen oxides → nitrogen D unburnt hydrocarbons → carbon dioxide and …
- Question 32
Ammonia is formed by a reversible reaction. …
- Question 33
The equation for an exothermic reaction in the Contact process is shown. 2SO2(g) …
- Question 34
A farmer’s soil is very low in both nitrogen (N) and phosphorus (P). Which fertiliser would improve the quality of this soil most effectively? percentage nitrogen (N) phosphorus (P) potassium …
- Question 35
The diagram shows the separation of petroleum into fractions. gasoline …
- Question 36
Which of the compounds shown are in the same homologous series? 1 CH3OH 2 CH3CH2OH 3 CH3COOH 4 CH3CH2CH2OH …
- Question 37
Which compounds contain the same number of carbon, hydrogen and oxygen atoms? …
- Question 38
What is an advantage of producing ethanol by fermentation of sugar compared to the catalytic addition of steam to ethene? A The alcohol produced is purer. B The process is faster. C The process uses high temperature. D The process …
- Question 39
The structure of a monomer is shown. C Cl …
- Question 40
Which formula represents a polyester? …
Other Chemistry papers from May/June 2016
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- 0620/41 Theory (Extended)
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- 0620/61 Alternative to Practical
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