Cambridge IGCSE · 0620 · Paper 4 · Theory (Extended)
Chemistry 0620/43 Oct/Nov 2023 past paper
Cambridge IGCSE Chemistry (0620) Paper 4 (Theory (Extended)), variant 3, 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
- 50
File names: 0620_w23_qp_43 · 0620_w23_ms_43
Grade thresholds for 0620/43 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 |
|---|---|---|---|---|---|---|
| 50 | 40 | 30 | 26 | 22 | 18 | 14 |
Topics in this paper
Which syllabus chapters 0620/43 Oct/Nov 2023 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Chemical reactions | 1 | 21 |
| Metals | 1 | 18 |
| Acids, bases and salts | 1 | 15 |
| Organic chemistry | 1 | 12 |
| Atoms, elements and compounds | 1 | 8 |
| Experimental techniques and chemical analysis | 1 | 6 |
Questions in 0620/43 Oct/Nov 2023
- Question 1
A list of substances is shown. barium nitrate carbon monoxide hydrated cobalt(II) chloride copper(II) oxide anhydrous copper(II) sulfate ethane potassium iodide propene sodium bromide sulfur dioxide zinc oxide Answer the following questions using only the substances from the list. Each …
- Question 2
Table 2.1 gives information about particles …
- Question 3
This question is about nitrogen and some of its compounds. (a) Nitrogen is converted into ammonia, NH3, in the Haber process. (i) Nitrogen is obtained from air. State the percentage of nitrogen in clean, dry air. (ii) State the source …
- Question 4
This question is about sulfuric acid and salts that are made from sulfuric acid. (a) Zinc reacts with dilute sulfuric acid. Aqueous zinc sulfate is one of the products. Powdered zinc is added to dilute sulfuric acid. The mixture is …
- Question 5
This question is about iron. (a) (i) Describe the bonding in a metallic element such as iron. You may include a labelled diagram as part of your answer. (ii) Explain why iron conducts electricity when it is solid. (b) Iron …
- Question 6
(a) Esters are members of a homologous series of organic compounds. Give two characteristics that are the same for all members of a homologous series. …
Other Chemistry papers from Oct/Nov 2023
- 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)
- 0620/41 Theory (Extended)
- 0620/42 Theory (Extended)
- 0620/61 Alternative to Practical
- 0620/62 Alternative to Practical
- 0620/63 Alternative to Practical