Cambridge O Level · 5070 · Paper 2 · Theory
Chemistry 5070/21 May/June 2022 past paper
Cambridge O Level Chemistry (5070) Paper 2 (Theory), variant 1, May/June 2022: the question paper and its official mark scheme, 9 questions worth 85 marks, with the grade thresholds. Free to open, no account needed.
- Questions
- 9
- Marks
- 75
- Grade A from
- 47
File names: 5070_s22_qp_21 · 5070_s22_ms_21
Grade thresholds for 5070/21 May/June 2022
The minimum raw marks Cambridge set for each grade on this component (out of 75). Thresholds change every session and variant, so always compare your score with the paper you actually sat.
| A | B | C | D | E |
|---|---|---|---|---|
| 47 | 34 | 21 | 17 | 11 |
Topics in this paper
Which syllabus chapters 5070/21 May/June 2022 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Organic chemistry | 2 | 17 |
| Metals | 1 | 14 |
| States of matter | 1 | 10 |
| Chemical reactions | 1 | 10 |
| Electrochemistry | 1 | 10 |
| Chemistry of the environment | 1 | 10 |
| Atoms, elements and compounds | 1 | 8 |
| Acids, bases and salts | 1 | 6 |
Questions in 5070/21 May/June 2022
- Question 1
Choose from the following compounds to answer the questions. NH4Cl BaSO4 KI K2SO3 Mg(NO3)2 NaOCOCH3 Na2CO3 Na3PO4 ZnSO4 Each compound may be used once, more than once or not at all. State which compound: (a) reacts with dilute nitric acid …
- Question 2
The table shows some information about elements in Group V. element electronic configuration melting point / °C boiling point / °C nitrogen …
- Question 3
The diagram shows some reactions of butanol. gas A and liquid B organic liquid D liquid B and gas C liquid B and organic liquid E complete combustion acidified potassium manganate(VII) heat with ethanoic acid incomplete combustion …
- Question 4
The table shows information about some particles. particle proton number nucleon number 35 17Cl …
- Question 5
Iron reacts with steam and with dilute sulfuric acid. (a) The reaction between iron and steam is reversible. The forward reaction is exothermic. 3Fe(s) + 4H2O(g) Fe3O4(s) + 4H2(g) An equilibrium mixture is formed when the reversible reaction happens in …
- Question 6
Carbon monoxide and nitrogen monoxide are pollutants formed in a car engine. (a) Describe how nitrogen monoxide is formed in a car engine. (b) Carbon monoxide reacts with nitrogen monoxide as shown in the equation. 2CO + 2NO 2CO2 + …
- Question 7
Aluminium is an element in Group III of the Periodic Table. (a) Aluminium is used to make containers for food because it does not react with water. State and explain, in terms of its properties, one other large-scale use of …
- Question 8
Alkenes are a homologous series of unsaturated hydrocarbons. (a) Name the alkene which has only three carbon atoms in its molecule. (b) Draw the structure of an unbranched and of a branched alkene. Show all of the atoms and all …
- Question 9
Ammonia, NH3, is used to make nitrogenous fertilisers. (a) Ammonia is manufactured using the reversible reaction between nitrogen and hydrogen. Construct the equation for this reversible reaction. (b) Ammonia is used to make the soluble salt ammonium nitrate, NH4NO3. (i) …
Other Chemistry papers from May/June 2022
- 5070/11 Multiple choice
- 5070/12 Multiple choice
- 5070/22 Theory
- 5070/41 Alternative to Practical
- 5070/42 Alternative to Practical