Cambridge IGCSE · 0620 · Paper 4 · Theory (Extended)
Chemistry 0620/42 Feb/March 2021 past paper
Cambridge IGCSE Chemistry (0620) Paper 4 (Theory (Extended)), variant 2, Feb/March 2021: the question paper and its official mark scheme, 6 questions worth 80 marks, with the grade thresholds. Free to open, no account needed.
- Questions
- 6
- Marks
- 80
- Grade A from
- 45
File names: 0620_m21_qp_42 · 0620_m21_ms_42
Grade thresholds for 0620/42 Feb/March 2021
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 |
|---|---|---|---|---|---|---|
| 45 | 35 | 24 | 20 | 16 | 12 | 8 |
Topics in this paper
Which syllabus chapters 0620/42 Feb/March 2021 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Chemistry of the environment | 2 | 22 |
| Atoms, elements and compounds | 2 | 21 |
| Organic chemistry | 1 | 20 |
| Acids, bases and salts | 1 | 17 |
Questions in 0620/42 Feb/March 2021
- Question 1
The table shows the numbers of protons, neutrons and electrons in particles A to I. particle protons neutrons electrons …
- Question 2
The elements shown are gases at room temperature and pressure. hydrogen nitrogen oxygen chlorine (a) State which one of these gases is green. (b) The gases shown exist as diatomic molecules. State the name of another element which has diatomic …
- Question 3
This question is about ammonia. (a) Nitrogen reacts with hydrogen to form ammonia in an industrial process. …
- Question 4
A student wanted to make some zinc chloride crystals. The student followed the procedure shown. step 1 Add excess zinc powder to dilute hydrochloric acid to form aqueous zinc chloride. step 2 Remove unreacted zinc powder from the aqueous zinc …
- Question 5
The table shows the names or structures of organic compounds P to …
- Question 6
Polymers are large molecules built up from small molecules. (a) State the name given to the small molecules from which polymers are made. (b) The formula of a polymer is shown. n C CH3 C CH3 …
Other Chemistry papers from Feb/March 2021
- 0620/12 Multiple choice (Core)
- 0620/22 Multiple choice (Extended)
- 0620/32 Theory (Core)
- 0620/62 Alternative to Practical