Cambridge IGCSE · 0620 · Paper 4 · Theory (Extended)
Chemistry 0620/42 Oct/Nov 2024 past paper
Cambridge IGCSE Chemistry (0620) Paper 4 (Theory (Extended)), variant 2, Oct/Nov 2024: 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
- 49
File names: 0620_w24_qp_42 · 0620_w24_ms_42
Grade thresholds for 0620/42 Oct/Nov 2024
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 |
|---|---|---|---|---|---|---|
| 49 | 37 | 26 | 22 | 17 | 13 | 9 |
Topics in this paper
Which syllabus chapters 0620/42 Oct/Nov 2024 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Stoichiometry | 2 | 28 |
| Chemical reactions | 1 | 19 |
| Electrochemistry | 1 | 13 |
| Organic chemistry | 1 | 11 |
| Atoms, elements and compounds | 1 | 9 |
Questions in 0620/42 Oct/Nov 2024
- Question 1
The formulae of the molecules A to I are shown in Table 1.1. Table 1.1 molecule formula …
- Question 2
Aluminium is manufactured by the electrolysis of aluminium oxide. (a) State the name of the main ore of aluminium. (b) Name the substance mixed with aluminium oxide to reduce the operating temperature of the process. (c) Explain why the molten …
- Question 3
Sulfur forms two chlorides, P and Q. Chloride P has the formula S2Cl 2. Chloride Q has the formula SCl 2. (a) Both chlorides are covalently bonded and have low melting points. Suggest, in terms of attraction between particles, why …
- Question 4
Silver bromide, AgBr, is made when aqueous silver ethanoate, CH3COOAg, is added to aqueous sodium bromide, NaBr. The equation for the reaction is shown in equation 1. equation 1 CH3COOAg + NaBr → CH3COONa + AgBr The method includes the …
- Question 5
Alkenes are manufactured by cracking larger alkane molecules. (a) State the source of the large alkane molecules used in cracking. (b) State two conditions needed for cracking large alkane molecules. …
- Question 6
Polyamides and polyesters are polymers. Polyamides can occur naturally or can be manufactured. (a) Part of the structure of a polyamide is shown in Fig. …
Other Chemistry papers from Oct/Nov 2024
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