Cambridge O Level · 5070 · Paper 2 · Theory
Chemistry 5070/22 Oct/Nov 2012 past paper
Cambridge O Level Chemistry (5070) Paper 2 (Theory), variant 2, Oct/Nov 2012: the question paper and its official mark scheme, 9 questions worth 85 marks. Free to open, no account needed.
- Questions
- 9
- Marks
- 85
File names: 5070_w12_qp_22 · 5070_w12_ms_22
Topics in this paper
Which syllabus chapters 5070/22 Oct/Nov 2012 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Chemical reactions | 2 | 20 |
| Electrochemistry | 1 | 11 |
| Atoms, elements and compounds | 1 | 10 |
| Chemistry of the environment | 1 | 10 |
| Acids, bases and salts | 1 | 10 |
| Stoichiometry | 1 | 9 |
| Organic chemistry | 1 | 9 |
| Metals | 1 | 6 |
Questions in 5070/22 Oct/Nov 2012
- Question 1
A1 (a) Define the term compound. (b) Choose from the following compounds to answer the questions below. calcium carbonate carbon dioxide carbon monoxide ethane glucose methane propane sodium oxide sucrose water zinc oxide Each compound can be used once, more …
- Question 2
For Examiner’s Use A2 A student heated different mixtures of metals and metal oxides. The table shows his results. mixture reacts or no reaction iron(III) oxide + zinc reacts lead(II) oxide + iron reacts lead(II) oxide + zinc reacts magnesium …
- Question 3
For Examiner’s Use A3 The rate of reaction of iron with aqueous bromine is determined using the apparatus shown below. iron rod aqueous bromine mechanical stirrer connected to iron rod The iron is removed at regular intervals. It is washed, …
- Question 4
For Examiner’s Use A4 Wood is made up of many different carbon compounds. (a) Describe how carbon compounds are made in plants by photosynthesis. (b) When wood is heated in the absence of air, the carbon compounds in the wood …
- Question 5
For Examiner’s Use A5 Nickel can be refined by reacting the impure metal with carbon monoxide. The impurities do not react with carbon monoxide. A volatile compound called nickel carbonyl is formed. This is decomposed to give pure nickel and …
- Question 6
B6 Seawater contains chloride, bromide and iodide ions. Bromine can be manufactured by bubbling chlorine through seawater. Cl 2 + 2Br– Br2 + 2Cl …
- Question 7
For Examiner’s Use B7 Glass contains silicon(IV) oxide and a number of metal oxides. (a) The structure of silicon(IV) oxide is shown below. silicon atom oxygen atom Key: (i) Describe two similarities in the structure of silicon(IV) oxide and diamond. …
- Question 8
For Examiner’s Use B8 Many fertilisers contain phosphate ions and nitrate ions. (a) Explain why farmers put fertilisers on the soil. (b) Why should the chemicals in fertilisers be soluble in water? (c) Ammonium nitrate, NH4NO3, and ammonium sulfate, (NH4)2SO4, …
- Question 9
For Examiner’s Use B9 Chlorine and sodium hydroxide are manufactured by the electrolysis of concentrated aqueous sodium chloride. (a) (i) Chlorine can be used to bleach wood pulp. Name another chemical that can be used to bleach wood pulp. (ii) …
Other Chemistry papers from Oct/Nov 2012
- 5070/11 Multiple choice
- 5070/12 Multiple choice
- 5070/21 Theory
- 5070/41 Alternative to Practical
- 5070/42 Alternative to Practical