Cambridge IGCSE · 0620 · Paper 4 · Theory (Extended)
Chemistry 0620/43 May/June 2023 past paper
Cambridge IGCSE Chemistry (0620) Paper 4 (Theory (Extended)), variant 3, May/June 2023: the question paper and its official mark scheme, 7 questions worth 80 marks, with the grade thresholds. Free to open, no account needed.
- Questions
- 7
- Marks
- 80
- Grade A from
- 48
File names: 0620_s23_qp_43 · 0620_s23_ms_43
Grade thresholds for 0620/43 May/June 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 |
|---|---|---|---|---|---|---|
| 48 | 36 | 22 | 18 | 14 | 11 | 8 |
Topics in this paper
Which syllabus chapters 0620/43 May/June 2023 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Atoms, elements and compounds | 2 | 21 |
| Organic chemistry | 2 | 18 |
| Electrochemistry | 1 | 16 |
| Chemistry of the environment | 1 | 15 |
| Chemical reactions | 1 | 10 |
Questions in 0620/43 May/June 2023
- Question 1
Some symbol equations and word equations, A to J, are shown. …
- Question 2
(a) The symbols of the elements in Period 3 of the Periodic Table are shown. Na Mg Al Si P S Cl Ar Use the symbols of the elements in Period 3 to answer the questions that follow. Each symbol …
- Question 3
Magnesium forms ionic compounds. (a) Magnesium reacts with fluorine to form the ionic compound magnesium fluoride. The electronic configurations of an atom of magnesium and an atom of fluorine are shown in Fig. 3.1. fluorine atom magnesium atom F Mg …
- Question 4
Hydrogen is produced by the reaction between zinc and dilute sulfuric acid, H2SO4. Zn(s) + H2SO4(aq) → ZnSO4(aq) …
- Question 5
This question is about electricity and chemical reactions. (a) Aqueous copper(II) sulfate is an electrolyte. The electrolysis of aqueous copper(II) sulfate using inert electrodes forms: ● copper at the cathode ● oxygen at the anode. (i) State what is meant …
- Question 6
This question is about nitrogen and compounds of nitrogen. (a) Ammonia is manufactured by the reaction between nitrogen and hydrogen in the Haber process. The equation is shown. …
- Question 7
This question is about organic compounds. (a) Propane and chlorine react at room temperature. An equation for the reaction is shown. C3H8 + Cl 2 → C3H7Cl + HCl (i) State the condition required for this reaction. (ii) Draw the …
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