Cambridge IGCSE · 0620 · Paper 3 · Theory (Extended)
Chemistry 0620/33 Oct/Nov 2012 past paper
Cambridge IGCSE Chemistry (0620) Paper 3 (Theory (Extended)), variant 3, Oct/Nov 2012: the question paper and its official mark scheme, 7 questions worth 80 marks, with the grade thresholds. Free to open, no account needed.
- Questions
- 7
- Marks
- 80
- Grade A from
- 37
File names: 0620_w12_qp_33 · 0620_w12_ms_33
Grade thresholds for 0620/33 Oct/Nov 2012
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 | 20 | 0 | 14 |
Topics in this paper
Which syllabus chapters 0620/33 Oct/Nov 2012 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Electrochemistry | 1 | 18 |
| Atoms, elements and compounds | 1 | 14 |
| Chemical energetics | 1 | 13 |
| Organic chemistry | 1 | 12 |
| States of matter | 1 | 9 |
| Acids, bases and salts | 1 | 8 |
| Chemistry of the environment | 1 | 6 |
Questions in 0620/33 Oct/Nov 2012
- Question 1
For Examiner’s Use 1 For each of the following, select an element from Period 4, potassium to krypton, which matches the description. (a) A metal that reacts rapidly with cold water to form a compound of the type M(OH)2 and …
- Question 2
(a) State a use for each of the following gases. (i) chlorine (ii) argon (iii) ethene (iv) oxygen (b) Describe how oxygen is obtained from air.
- Question 3
For Examiner’s Use 3 (a) A small amount of liquid bromine is added to a container which is then sealed. Br2(l) → Br2(g) Use the ideas of the Kinetic Theory to explain why, after about an hour, the bromine molecules …
- Question 4
For Examiner’s Use 4 Zinc alloys have been used for over 2500 years. (a) (i) Explain the phrase zinc alloy. (ii) Making alloys is still a major use of zinc. State one other large scale use of zinc. (iii) Describe …
- Question 5
For Examiner’s Use 5 Propenoic acid is an unsaturated carboxylic acid. The structural formula of propenoic acid is given below. …
- Question 6
For Examiner’s Use 6 Until recently, arsenic poisoning, either deliberate or accidental, has been a frequent cause of death. The symptoms of arsenic poisoning are identical with those of a common illness, cholera. A reliable test was needed to prove …
- Question 7
For Examiner’s Use 7 Ammonia is made by the Haber process. …
Other Chemistry papers from Oct/Nov 2012
- 0620/11 Multiple choice (Core)
- 0620/12 Multiple choice (Core)
- 0620/13 Multiple choice (Core)
- 0620/21 Theory (Core)
- 0620/22 Theory (Core)
- 0620/23 Theory (Core)
- 0620/31 Theory (Extended)
- 0620/32 Theory (Extended)
- 0620/61 Alternative to Practical
- 0620/62 Alternative to Practical
- 0620/63 Alternative to Practical