Cambridge O Level · 5070 · Paper 2 · Theory
Chemistry 5070/22 May/June 2014 past paper
Cambridge O Level Chemistry (5070) Paper 2 (Theory), variant 2, May/June 2014: the question paper and its official mark scheme, 10 questions worth 85 marks, with the grade thresholds. Free to open, no account needed.
- Questions
- 10
- Marks
- 75
- Grade A from
- 52
File names: 5070_s14_qp_22 · 5070_s14_ms_22
Grade thresholds for 5070/22 May/June 2014
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 |
|---|---|---|---|---|
| 52 | 35 | 22 | 16 | 11 |
Topics in this paper
Which syllabus chapters 5070/22 May/June 2014 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Organic chemistry | 2 | 22 |
| Stoichiometry | 2 | 19 |
| Metals | 2 | 12 |
| Chemical energetics | 1 | 10 |
| The Periodic Table | 1 | 10 |
| Electrochemistry | 1 | 6 |
| Experimental techniques and chemical analysis | 1 | 6 |
Questions in 5070/22 May/June 2014
- Question 1
A1 Choose from the following gases to answer the questions below. CCl F3 CH4 CO CO2 H2 N2 NH3 O2 SO2 Each gas can be used once, more than once or not at all. Which gas is (a) used in …
- Question 2
A2 Farmers use chemicals to improve crop yield. Ammonium phosphate, (NH4)3PO4, is used as a fertiliser and calcium hydroxide, Ca(OH)2, is used to reduce the acidity of soils. The relative formula mass of ammonium phosphate is 149. (a) Calculate the …
- Question 3
A3 Proteins, carbohydrates and fats are natural macromolecules. The partial structure of a protein is shown below. …
- Question 4
A4 Only liquids that contain moving ions can be electrolysed. These liquids are called electrolytes. (a) Complete the following table which shows the products formed when some liquids are electrolysed using inert graphite electrodes. electrolyte ions present in electrolyte product …
- Question 5
A5 Haematite, limestone and coke are heated together in a blast furnace in the manufacture of iron. (a) State why each of the following compounds are needed in a blast furnace. haematite limestone coke (b) Iron has a high melting …
- Question 6
A6 The flow chart shows the reactions of metal A and some of its compounds. metal A green solution of B green precipitate D yellow solution of E red-brown precipitate F gas C Cl2(g) HCl(aq) excess NaOH(aq) excess NaOH(aq) Identify, …
- Question 7
B7 Alkanes are a homologous series of hydrocarbons. (a) There are two alkanes with the molecular formula C4H10. Draw the structures, showing all the atoms and all the bonds, of these two alkanes. (b) One of the alkanes with the …
- Question 8
B8 Butan-1-ol, CH3CH2CH2CH2OH, and ethanol, CH3CH2OH, are both alcohols. Alcohols, such as ethanol, react with sodium to form hydrogen. 2CH3CH2OH + 2Na 2CH3CH2ONa …
- Question 9
B9 When iron is heated with steam in a sealed container, an equilibrium mixture is obtained. 3Fe(s) …
- Question 10
B10 Astatine, At, is an element in Group VII of the Periodic Table. The table shows some information about two isotopes of astatine. symbol number of protons number of electrons number of neutrons 210 85At 211 85At (a) (i) Complete …
Other Chemistry papers from May/June 2014
- 5070/11 Multiple choice
- 5070/12 Multiple choice
- 5070/21 Theory
- 5070/41 Alternative to Practical
- 5070/42 Alternative to Practical