Cambridge IGCSE · 0620 · Paper 4 · Theory (Extended)
Chemistry 0620/42 Feb/March 2020 past paper
Cambridge IGCSE Chemistry (0620) Paper 4 (Theory (Extended)), variant 2, Feb/March 2020: the question paper and its official mark scheme, 5 questions worth 80 marks, with the grade thresholds. Free to open, no account needed.
- Questions
- 5
- Marks
- 80
- Grade A from
- 55
File names: 0620_m20_qp_42 · 0620_m20_ms_42
Grade thresholds for 0620/42 Feb/March 2020
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 | F | G |
|---|---|---|---|---|---|---|
| 55 | 45 | 35 | 29 | 23 | 16 | 10 |
Topics in this paper
Which syllabus chapters 0620/42 Feb/March 2020 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Atoms, elements and compounds | 1 | 28 |
| Acids, bases and salts | 1 | 19 |
| Organic chemistry | 1 | 13 |
| Metals | 1 | 12 |
| Stoichiometry | 1 | 8 |
Questions in 0620/42 Feb/March 2020
- Question 1
Petroleum is a useful natural resource. The diagram shows how petroleum can be separated into useful substances. kerosene fraction A gasoline fraction refinery gas diesel oil fuel oil fraction petroleum lubricating oil fraction B (a) What is the name of …
- Question 2
Aluminium is extracted from its ore. The ore is converted into pure aluminium oxide, which then undergoes electrolysis as shown. …
- Question 3
The Periodic Table is a method of classifying elements. (a) Identify the element which is in Group VI and Period 4. (b) Calcium is in Group II and chlorine is in Group VII of the Periodic Table. Explain, in terms …
- Question 4
Iron is a typical transition element. Iron: ● ● acts as a catalyst ● ● forms coloured compounds ● ● has more than one oxidation state. (a) Name one major industrial process that uses iron as a catalyst and name …
- Question 5
There are two types of polymers. (a) Addition polymers are made from many identical small units. (i) What is the term used to describe these small units? (ii) A section of an addition polymer is shown. …
Other Chemistry papers from Feb/March 2020
- 0620/12 Multiple choice (Core)
- 0620/22 Multiple choice (Extended)
- 0620/32 Theory (Core)
- 0620/62 Alternative to Practical