Cambridge IGCSE ยท 0620 ยท Paper 3 ยท Theory (Extended)
Chemistry 0620/33 May/June 2014 past paper
Cambridge IGCSE Chemistry (0620) Paper 3 (Theory (Extended)), variant 3, May/June 2014: 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
- 40
File names: 0620_s14_qp_33 ยท 0620_s14_ms_33
Grade thresholds for 0620/33 May/June 2014
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 |
|---|---|---|---|---|
| 40 | 33 | 26 | 19 | 12 |
Topics in this paper
Which syllabus chapters 0620/33 May/June 2014 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Metals | 2 | 26 |
| Organic chemistry | 2 | 25 |
| Chemistry of the environment | 2 | 23 |
| States of matter | 1 | 6 |
Questions in 0620/33 May/June 2014
- Question 1
Choose a gas from the following list to answer the questions below. Each gas may be used once, more than once or not at all. ammonia carbon dioxide carbon monoxide ๏ฌ uorine hydrogen krypton nitrogen propene sulfur dioxide (a) It โฆ
- Question 2
Explain each of the following in terms of the kinetic particle theory. (a) The rate of most reactions increases at higher temperatures. (b) A liquid has a ๏ฌ xed volume but takes up the shape of the container. A gas โฆ
- Question 3
(a) Biological catalysts produced by microbes cause food to deteriorate and decay. (i) What is the name of these biological catalysts? (ii) Freezing does not kill the microbes. Suggest why freezing is still a very effective way of preserving food. โฆ
- Question 4
Iron from a blast furnace contains about 5% of the impurities โ carbon, silicon, phosphorus and sulfur. Most of this impure iron is used to make steels, such as mild steel, and a very small percentage is used to make โฆ
- Question 5
Ammonia is made by the Haber process. โฆ
- Question 6
The alkanes are a family of saturated hydrocarbons. Their reactions include combustion, cracking and substitution. (a) (i) What is meant by the term hydrocarbon? (ii) What is meant by the term saturated โฆ
- Question 7
Aluminium is obtained from puri๏ฌ ed alumina, Al 2O3, by electrolysis. (a) Alumina is obtained from the main ore of aluminium. State the name of this ore. (b) Describe the extraction of aluminium from alumina. Include the electrolyte, the electrodes โฆ
Other Chemistry papers from May/June 2014
- 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