Cambridge IGCSE · 0620 · Paper 2 · Multiple choice (Extended)
Chemistry 0620/22 Feb/March 2020 past paper
Cambridge IGCSE Chemistry (0620) Paper 2 (Multiple choice (Extended)), variant 2, Feb/March 2020: 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
- 31
File names: 0620_m20_qp_22 · 0620_m20_ms_22
Grade thresholds for 0620/22 Feb/March 2020
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 |
|---|---|---|---|---|---|---|
| 31 | 26 | 21 | 18 | 15 | 13 | 11 |
Topics in this paper
Which syllabus chapters 0620/22 Feb/March 2020 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 0620/22 Feb/March 2020
- Question 1
The formula of methane is CH4 and the formula of ethane is C2H6. Which row describes diffusion and the relative rates of diffusion of methane and ethane? description of diffusion relative rate of diffusion A particles move from a high …
- Question 2
Which test is used to show that a sample of water is pure? A Evaporate the water to see if any solids remain. B Heat the water to check its boiling point. C Test with anhydrous cobalt(II) chloride. D Use …
- Question 3
Chromatography is used to separate and identify the components in both coloured and colourless mixtures. For colourless mixtures the chromatogram has to be treated with another chemical. What is the name of this type of chemical? A colouring agent B …
- Question 4
Lithium reacts with fluorine to form the compound lithium fluoride. Which statement about this reaction is correct? A Each fluorine atom gains one electron. B Each fluorine atom gains two or more electrons. C Each fluorine atom loses one electron. …
- Question 5
- Question 6
The molecular structure of hydrazine, N2H4, is shown. …
- Question 7
Solid X has a high boiling point. Its structure has positive ions surrounded by a sea of electrons. Which other properties does solid X have? A brittle and an electrical conductor B brittle and an insulator C malleable and an …
- Question 8
The formulae of some ions are shown. positive ions negative ions Al 3+ Cl – Fe2+ N3– Mg2+ NO3 – Na+ O2– Zn2+ SO4 2– In which row is the formula not correct? compound formula A aluminium oxide Al 2O3 …
- Question 9
The equation for the decomposition of magnesium nitrate is shown. 2Mg(NO3)2(s) → 2MgO(s) + 4NO2(g) + O2(g) Which volume of gas is produced when 0.1 moles of magnesium nitrate is decomposed completely? A 1.2 dm3 B 4.8 dm3 C 6.0 …
- Question 10
Which statements about the electrolysis of molten lead(II) bromide are correct? 1 Lead ions move to the anode and are oxidised. 2 Lead ions move to the cathode and are reduced. 3 Bromide ions move to the anode and are …
- Question 11
Aqueous copper(II) sulfate is electrolysed using carbon electrodes. Which statement is correct? A Bubbles of hydrogen are formed at the anode. B Bubbles of oxygen gas are formed at the cathode. C Copper is deposited at the anode. D The …
- Question 12
Nitrogen trifluoride, NF3, is used in the manufacture of certain types of solar panels. The equation for the formation of nitrogen trifluoride is shown. …
- Question 13
Which statements about hydrogen fuel cells are correct? 1 The reaction between hydrogen and oxygen is endothermic. 2 The waste product in a hydrogen fuel cell is water. 3 A chemical reaction in the cell produces hydrogen which is used …
- Question 14
Which change is a physical change? A Copper(II) carbonate changes colour from green to black when it is heated, and stays black when it cools. B Ethanol reacts with oxygen to form carbon dioxide and water. C Hydrogen peroxide decomposes …
- Question 15
A student adds excess magnesium ribbon to 10 cm3 of 0.5 mol / dm3 sulfuric acid. The hydrogen gas is collected and its volume measured every 10 seconds. The experiment is repeated using the same mass of magnesium ribbon with …
- Question 16
An equilibrium reaction is shown. N2O4(g) 2NO2(g) The forward reaction is endothermic. What is the effect of changing the temperature and pressure on the equilibrium position? increasing temperature increasing pressure A moves to the left moves to the left B …
- Question 17
In which reaction is the underlined compound acting as a reducing agent? A CO2 …
- Question 18
X, Y and Z are oxides of elements in the same row of the Periodic Table. Some information about each oxide is shown. oxide solubility in water ability to neutralise an acid ability to neutralise an alkali X soluble …
- Question 19
Four different acids are dissolved in water. Which beaker contains the most concentrated strong acid solution? HX HX HX HX HX HX HX HX …
- Question 20
The following substances can be reacted together to prepare salts. 1 copper(II) oxide and excess hydrochloric acid 2 hydrochloric acid and excess sodium hydroxide 3 hydrochloric acid and excess zinc carbonate In which reactions can the excess reactant be separated …
- Question 21
Salt S is dissolved in water and three tests are carried out on the solution. test result 1 aqueous sodium hydroxide is added green precipitate formed, insoluble in excess sodium hydroxide 2 dilute nitric acid is added no reaction 3 …
- Question 22
Which statement about the Periodic Table is correct? A Most metallic elements are on the left. B Elements in the same period have the same number of outer electrons. C Elements on the left are usually gases. D The relative …
- Question 23
- Question 24
Some properties of substances are listed. 1 They conduct electricity. 2 They have low densities. 3 They have high melting points. 4 They are malleable. Which properties are shown by transition metals? A 1 and 3 only B 1 and …
- Question 25
Sodium is a Group I metal. Which property, that is typical of most metals, is not shown by sodium? A conductor of heat B high melting point C malleable D shiny
- Question 26
Four metals, iron, copper, magnesium and Y, are heated separately with their oxides. The results are shown. metal magnesium oxide Y oxide copper oxide iron oxide …
- Question 27
Aluminium is extracted from bauxite by electrolysis. Which statement is correct? A Aluminium ions are oxidised to form aluminium. B The cathode has to be replaced regularly because it reacts with the oxygen which is formed. C Cryolite is added …
- Question 28
Some properties of aluminium are listed. 1 It conducts heat. 2 It has a low density. 3 It is strong. 4 It is resistant to corrosion. Which of these properties make aluminium suitable for making food containers for chilled food …
- Question 29
Water is treated at a waterworks to make it fit to drink. What is present in the water when it leaves the waterworks? A bacteria only B bacteria and insoluble substances C chlorine compounds only D chlorine compounds and soluble …
- Question 30
Sulfur dioxide, carbon monoxide and oxides of nitrogen are common gaseous pollutants found in the air. Which pollutants contribute to acid rain? A carbon monoxide and sulfur dioxide B oxides of nitrogen and sulfur dioxide C oxides of nitrogen only …
- Question 31
Oxides of nitrogen, such as NO and NO2, are formed in the petrol engines of cars. They are removed from the exhaust gases by reactions in the car’s catalytic converter. Which row describes how oxides of nitrogen are formed in …
- Question 32
Zinc is used to cover iron to prevent it from rusting. Why is zinc a suitable metal to use? A Iron is more reactive than zinc. B Iron atoms are bigger than zinc atoms. C Zinc is more reactive than …
- Question 33
Fertilisers are mixtures of different compounds used to increase the growth of crops. Which pair of substances contain the three essential elements for plant growth? A ammonium nitrate and calcium phosphate B ammonium nitrate and potassium chloride C ammonium phosphate …
- Question 34
Which row describes the conditions used in the manufacture of sulfuric acid by the Contact process? catalyst pressure temperature A iron high high B iron low low C vanadium(V) oxide high low D vanadium(V) oxide low high
- Question 35
Petroleum is an important raw material that is separated into useful products. Which terms describe petroleum and the method used to separate it? description separation method A compound cracking B compound fractional distillation C mixture cracking D mixture fractional distillation
- Question 36
Which statements about propene are correct? 1 Propene contains only single bonds. 2 Propene decolourises bromine water. 3 Propene is obtained by cracking. 4 Propene is a hydrocarbon. A 1 and …
- Question 37
Which row describes the production of ethanol and its properties? can be made from glucose can be made from ethene is used as a fuel is used as a solvent …
- Question 38
Ethanoic acid is a typical carboxylic acid. Which statement about ethanoic acid is correct? A It can be oxidised to produce ethanol. B It is a proton acceptor. C It is fully dissociated in water. D It reacts with ethanol …
- Question 39
Which structure represents the ester made from ethanoic acid and propanol? …
- Question 40
The structure of a polymer is shown. …
Other Chemistry papers from Feb/March 2020
- 0620/12 Multiple choice (Core)
- 0620/32 Theory (Core)
- 0620/42 Theory (Extended)
- 0620/62 Alternative to Practical