Cambridge IGCSE · 0620 · Paper 4 · Theory (Extended)
Chemistry 0620/41 Oct/Nov 2021 past paper
Cambridge IGCSE Chemistry (0620) Paper 4 (Theory (Extended)), variant 1, Oct/Nov 2021: 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
- 43
File names: 0620_w21_qp_41 · 0620_w21_ms_41
Grade thresholds for 0620/41 Oct/Nov 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 |
|---|---|---|---|---|---|---|
| 43 | 32 | 22 | 19 | 16 | 12 | 8 |
Topics in this paper
Which syllabus chapters 0620/41 Oct/Nov 2021 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Stoichiometry | 1 | 22 |
| Metals | 1 | 18 |
| Organic chemistry | 1 | 15 |
| Electrochemistry | 1 | 13 |
| Chemical reactions | 1 | 12 |
Questions in 0620/41 Oct/Nov 2021
- Question 1
Some elements are shown in the order they appear in the reactivity series. The most reactive element is at the top. sodium calcium magnesium aluminium zinc iron hydrogen copper (a) Answer the questions using the list of elements. Each element …
- Question 2
This question is about copper and its compounds. (a) Copper has two different naturally occurring atoms, 63Cu and 65Cu. (i) State the term used for atoms of the same element with different nucleon numbers. (ii) The atomic number of copper …
- Question 3
This question is about electrolysis. Concentrated hydrochloric acid is electrolysed using the apparatus shown. concentrated hydrochloric acid carbon electrodes wire …
- Question 4
Chalcopyrite, FeCuS2, is used in the manufacture of sulfuric acid in the Contact process. (a) In the first stage of the process, chalcopyrite reacts with oxygen in the air to produce sulfur dioxide, SO2, iron(III) oxide and copper(II) oxide. Complete …
- Question 5
Alkenes and carboxylic acids are both families of similar compounds with similar chemical properties. Alkenes and carboxylic acids have different reactions. (a) State the term used for a ‘family’ of similar compounds. (b) State the general formula of alkenes. (c) …
Other Chemistry papers from Oct/Nov 2021
- 0620/11 Multiple choice (Core)
- 0620/12 Multiple choice (Core)
- 0620/13 Multiple choice (Core)
- 0620/21 Multiple choice (Extended)
- 0620/22 Multiple choice (Extended)
- 0620/23 Multiple choice (Extended)
- 0620/31 Theory (Core)
- 0620/32 Theory (Core)
- 0620/33 Theory (Core)
- 0620/42 Theory (Extended)
- 0620/43 Theory (Extended)
- 0620/61 Alternative to Practical
- 0620/62 Alternative to Practical
- 0620/63 Alternative to Practical