Cambridge IGCSE · 0620 · Paper 2 · Multiple choice (Extended)
Chemistry 0620/21 May/June 2017 past paper
Cambridge IGCSE Chemistry (0620) Paper 2 (Multiple choice (Extended)), variant 1, May/June 2017: 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
- 26
File names: 0620_s17_qp_21 · 0620_s17_ms_21
Grade thresholds for 0620/21 May/June 2017
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 | 15 | 12 | 11 | 10 |
Topics in this paper
Which syllabus chapters 0620/21 May/June 2017 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 0620/21 May/June 2017
- Question 1
Small crystals of purple KMnO4 (Mr = 158) and orange K2Cr2O7 (Mr = 294) were placed at the centres of separate petri dishes filled with agar jelly. They were left to stand under the same physical conditions. After some time, …
- Question 2
Pure water has a boiling point of 100 °C and a freezing point of 0 °C. What is the boiling point and freezing point of a sample of aqueous sodium chloride? boiling point / °C freezing point …
- Question 3
A chromatogram obtained from the chromatography of four substances is shown. Which substance has an Rf value of 0.6? solvent front baseline …
- Question 4
Sodium reacts with chlorine to form sodium chloride. Which statements describe what happens to the sodium atoms in this reaction? 1 Sodium atoms form positive ions. 2 Sodium atoms form negative ions. 3 Sodium atoms gain electrons. 4 Sodium atoms …
- Question 5
Diamond is extremely hard and does not conduct electricity. Which statement explains these properties? A It has a lattice of positive carbon ions in a ‘sea of electrons’. B It has delocalised electrons and each carbon atom forms three covalent …
- Question 6
Which statement about metals is not correct? A Metals are malleable because the metal ions can slide over one another. B Metals conduct electricity because electrons can move through the lattice. C Metals consist of a giant lattice of metal …
- Question 7
Aluminium reacts with fluorine. xAl …
- Question 8
Carbon monoxide burns in oxygen to produce carbon dioxide. 2CO(g) …
- Question 9
Which statement about electrolysis is correct? A Electrons move through the electrolyte from the cathode to the anode. B Electrons move towards the cathode in the external circuit. C Negative ions move towards the anode in the external circuit. D …
- Question 10
The reactivity series for a number of different metals is shown. most reactive least reactive magnesium zinc iron copper silver platinum The diagram shows different metal strips dipped into an electrolyte. V metal strip metal strip electrolyte Which pair of …
- Question 11
Some properties of four fuels are shown in the table. Which fuel is a gas at room temperature and makes two products when it burns in a plentiful supply of air? fuel formula melting point / °C boiling point …
- Question 12
Which statements about exothermic and endothermic reactions are correct? 1 During an exothermic reaction, heat is given out. 2 The temperature of an endothermic reaction goes up because heat is taken in. 3 Burning methane in the air is an …
- Question 13
Chlorine reacts with ethane to produce chloroethane and hydrogen chloride. …
- Question 14
When sulfur is heated it undergoes a 1 change as it melts. Further heating causes the sulfur to undergo a 2 change and form sulfur dioxide. Which words complete gaps 1 and …
- Question 15
A student was investigating the reaction between marble chips and dilute hydrochloric acid. bung marble chips 25 cm3 of dilute hydrochloric acid gas syringe Which changes slow down the rate of reaction? temperature of acid concentration of acid surface area …
- Question 16
Nitrogen, hydrogen and ammonia gases are placed inside a container. The container is then sealed. After some time, an equilibrium forms. …
- Question 17
An example of a redox reaction is shown. Zn + Cu2+ → Zn2+ + Cu Which statement about the reaction is correct? A Zn is the oxidising agent and it oxidises Cu2+. B Zn is the oxidising agent and it …
- Question 18
Zinc oxide is amphoteric. Which row describes the reactions of zinc oxide? reaction with hydrochloric acid reaction with aqueous sodium hydroxide …
- Question 19
Which row shows how the hydrogen ion concentration and pH of ethanoic acid compare to those of hydrochloric acid of the same concentration? ethanoic acid compared to hydrochloric acid hydrogen ion concentration pH A higher higher B higher lower C …
- Question 20
A pure sample of the insoluble salt barium carbonate can be made using the method given. step 1 Dissolve barium chloride in water. step 2 Separately dissolve sodium carbonate in water. step 3 Mix the two solutions together. step 4 …
- Question 21
Substance X reacts with warm dilute hydrochloric acid to produce a gas which decolourises acidified aqueous potassium manganate(VII). Substance X gives a yellow flame in a flame test. What is X? A potassium chloride B potassium sulfite C sodium chloride …
- Question 22
Which element is less reactive than the other members of its group in the Periodic Table? A astatine B caesium C fluorine D rubidium
- Question 23
The elements in Group IV of the Periodic Table are shown. carbon silicon germanium tin lead flerovium What does not occur in Group IV as it is descended? A The proton number of the elements increases. B The elements become …
- Question 24
Why are weather balloons sometimes filled with helium rather than hydrogen? A Helium is found in air. B Helium is less dense than hydrogen. C Helium is more dense than hydrogen. D Helium is unreactive.
- Question 25
Metal X is added to a colourless aqueous solution of the sulfate of metal Y. A coloured solution is formed and metal Y is deposited at the bottom of the beaker. Which row describes elements X and Y and their …
- Question 26
Element E: • forms an alloy • has a basic oxide • is below hydrogen in the reactivity series. What is E? A carbon B copper C sulfur D zinc
- Question 27
Zinc metal is extracted from its ore zinc blende in a similar method to that used to extract iron from hematite. In which way is zinc extraction different from iron extraction? A Carbon and carbon monoxide are the main reducing …
- Question 28
Stainless steel is an alloy of iron and other metals. It is strong and does not rust but it costs much more than normal steel. What is not made from stainless steel? A cutlery B pipes in a chemical factory …
- Question 29
The diagram shows some uses of water in the home. …
- Question 30
Oxides of nitrogen are found in polluted air. Which statement about oxides of nitrogen is correct? A Oxides of nitrogen are formed by the reaction of nitrogen with oxygen during the fractional distillation of liquid air. B Oxides of nitrogen …
- Question 31
Photosynthesis and respiration are important natural processes. Which statement is correct? A Carbon dioxide is formed by the reaction of glucose with water during photosynthesis. B Carbon dioxide is removed from the air by respiration. C Glucose reacts with water …
- Question 32
Which row gives the conditions for the Haber process? temperature / °C pressure / atm catalyst …
- Question 33
Which statement about sulfuric acid is correct? A It is made by the Haber process. B It is made in the atmosphere by the action of lightning. C It reacts with ammonia to produce a fertiliser. D It reacts with …
- Question 34
Which statement is not correct? A Converting limestone into lime is a thermal decomposition reaction. B Flue gas desulfurisation is a neutralisation reaction. C In the extraction of iron, calcium carbonate is converted into calcium oxide. D Slaked lime is …
- Question 35
Which fraction of petroleum is not matched to its correct use? fraction use A bitumen making roads B gasoline fuel for cars C kerosene fuel for ships D naphtha chemical industry
- Question 36
The diagram shows the structures of two organic molecules. …
- Question 37
The diagram shows part of the molecule of a polymer. …
- Question 38
Ethanol is manufactured by fermentation or by the catalytic addition of steam to ethene. Which statement is correct? A Fermentation uses a higher temperature than the catalytic addition of steam to ethene. B Fermentation uses a non-renewable resource. C The …
- Question 39
The structure of an ester is shown. …
- Question 40
Keratin is a protein that is found in human hair. Keratin is chemically broken down to produce amino acids. What is the name of this chemical process? A catalysis B hydration C hydrolysis D polymerisation Group The Periodic Table of …
Other Chemistry papers from May/June 2017
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- 0620/13 Multiple choice (Core)
- 0620/22 Multiple choice (Extended)
- 0620/23 Multiple choice (Extended)
- 0620/31 Theory (Core)
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- 0620/33 Theory (Core)
- 0620/41 Theory (Extended)
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- 0620/43 Theory (Extended)
- 0620/61 Alternative to Practical
- 0620/62 Alternative to Practical
- 0620/63 Alternative to Practical