Cambridge IGCSE · 0620 · Paper 4 · Theory (Extended)
Chemistry 0620/41 Oct/Nov 2023 past paper
Cambridge IGCSE Chemistry (0620) Paper 4 (Theory (Extended)), variant 1, Oct/Nov 2023: 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
- 47
File names: 0620_w23_qp_41 · 0620_w23_ms_41
Grade thresholds for 0620/41 Oct/Nov 2023
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 |
|---|---|---|---|---|---|---|
| 47 | 36 | 26 | 21 | 16 | 12 | 8 |
Topics in this paper
Which syllabus chapters 0620/41 Oct/Nov 2023 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Atoms, elements and compounds | 1 | 21 |
| Chemistry of the environment | 2 | 18 |
| Acids, bases and salts | 1 | 17 |
| The Periodic Table | 1 | 12 |
| Chemical reactions | 1 | 12 |
Questions in 0620/41 Oct/Nov 2023
- Question 1
A list of gases is shown. ammonia carbon dioxide carbon monoxide ethene fluorine oxygen sulfur dioxide xenon Answer the following questions using only the gases from the list. Each gas may be used once, more than once or not at …
- Question 2
Boron and aluminium are Group III elements. (a) Boron has only two naturally occurring isotopes, 10B and 11B. Complete Table 2.1 to show the numbers of protons, neutrons and electrons in an atom of 11B. Table 2.1 number of protons …
- Question 3
Order of reactivity can be determined by displacement reactions. (a) A student investigates the reactivities of four metals by carrying out a series of experiments. Each of the metals lead, manganese, silver and zinc are added separately to aqueous metal …
- Question 4
Aqueous hydrogen peroxide, H2O2, slowly forms water and oxygen at room temperature and pressure, r.t.p. This reaction is catalysed by manganese(IV) oxide. The equation is shown. 2H2O2(aq) …
- Question 5
Methane reacts with steam to produce hydrogen gas. CH4(g) + H2O(g) CO(g) …
- Question 6
Ethanol is manufactured by two methods: method 1 fermentation of aqueous glucose method 2 catalytic addition of steam to an alkene. (a) Method 1 takes place at room temperature and pressure. State two other conditions needed in method …
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