Cambridge IGCSE ยท 0620 ยท Paper 3 ยท Theory (Extended)
Chemistry 0620/31 May/June 2011 past paper
Cambridge IGCSE Chemistry (0620) Paper 3 (Theory (Extended)), variant 1, May/June 2011: the question paper and its official mark scheme, 8 questions worth 80 marks, with the grade thresholds. Free to open, no account needed.
- Questions
- 8
- Marks
- 80
- Grade A from
- 37
File names: 0620_s11_qp_31 ยท 0620_s11_ms_31
Grade thresholds for 0620/31 May/June 2011
The minimum raw marks Cambridge set for each grade on this component (out of 80). Thresholds change every session and variant, so always compare your score with the paper you actually sat.
| A | B | C | D | E |
|---|---|---|---|---|
| 37 | 0 | 21 | 0 | 10 |
Topics in this paper
Which syllabus chapters 0620/31 May/June 2011 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Stoichiometry | 2 | 16 |
| Atoms, elements and compounds | 1 | 13 |
| Acids, bases and salts | 1 | 12 |
| Organic chemistry | 1 | 12 |
| Metals | 1 | 11 |
| Chemistry of the environment | 1 | 10 |
| Experimental techniques and chemical analysis | 1 | 6 |
Questions in 0620/31 May/June 2011
- Question 1
For Examinerโs Use 1 The following techniques are used to separate mixtures. A simple distillation B fractional distillation C evaporation D chromatography E ๏ฌ ltration F diffusion From this list, choose the most suitable technique to separate the following. (a) โฆ
- Question 2
Selenium and sulfur are in Group VI. They have similar properties. (a) One of the main uses of selenium is in photoelectric cells. These cells can change light into electrical energy. (i) Name a process which can change light into โฆ
- Question 3
Iron from the blast furnace is impure. It contains about 4 % carbon and 0.5 % silicon. Most of this impure iron is used to make mild steel, an alloy of iron containing less then 0.25 % carbon. (a) A โฆ
- Question 4
A major ore of zinc is zinc blende, ZnS. A by-product of the extraction of zinc from this ore is sulfur dioxide which is used to make sulfuric acid. (a) (i) Zinc blende is heated in air. Zinc oxide and โฆ
- Question 5
Hydriodic acid, HI(aq), is a strong acid. Its salts are iodides. (a) It has the reactions of a typical strong acid. Complete the following equations. (i) Li + HI โ + (ii) zinc carbonate โฆ
- Question 6
The structural formula of a butanol is given below. CH3 โ CH2 โ CH2 โ CH2 โ OH (a) Butanol can be made from petroleum and also by fermentation. (i) Describe the chemistry of making butanol from petroleum by the โฆ
- Question 7
For Examinerโs Use 7 Excess hydrochloric acid was added to powdered zinc. The hydrogen evolved was collected and its volume measured every 20 seconds. The experiments were repeated at the same temperature using the same number of moles of powdered โฆ
- Question 8
For Examinerโs Use 8 There are two types of polymerisation - addition and condensation. (a) Explain the difference between them. (b) Poly(dichloroethene) is used to package food. Draw its structure. The structural formula of dichloroethene is shown below. C C โฆ
Other Chemistry papers from May/June 2011
- 0620/11 Multiple choice (Core)
- 0620/12 Multiple choice (Core)
- 0620/13 Multiple choice (Core)
- 0620/21 Theory (Core)
- 0620/22 Theory (Core)
- 0620/32 Theory (Extended)
- 0620/33 Theory (Extended)
- 0620/61 Alternative to Practical
- 0620/62 Alternative to Practical
- 0620/63 Alternative to Practical