Cambridge IGCSE · 0620 · Paper 4 · Theory (Extended)
Chemistry 0620/43 Oct/Nov 2022 past paper
Cambridge IGCSE Chemistry (0620) Paper 4 (Theory (Extended)), variant 3, Oct/Nov 2022: 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_w22_qp_43 · 0620_w22_ms_43
Grade thresholds for 0620/43 Oct/Nov 2022
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 | 40 | 31 | 26 | 21 | 16 | 11 |
Topics in this paper
Which syllabus chapters 0620/43 Oct/Nov 2022 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Stoichiometry | 2 | 30 |
| Acids, bases and salts | 1 | 17 |
| Electrochemistry | 1 | 15 |
| States of matter | 1 | 10 |
| Atoms, elements and compounds | 1 | 8 |
Questions in 0620/43 Oct/Nov 2022
- Question 1
Atoms and ions are made from small particles called electrons, neutrons and protons. (a) Complete the table. particle relative charge relative mass electron …
- Question 2
The table shows the melting points, boiling points and electrical conductivities of six substances, …
- Question 3
Aluminium is extracted from its ore by electrolysis. (a) Name the ore of aluminium which consists mainly of aluminium oxide. (b) State what is meant by the term electrolysis. (c) Electrolysis is carried out on aluminium oxide dissolved in molten …
- Question 4
This question is about compounds of phosphorus. (a) Gaseous phosphorus(V) chloride decomposes into gaseous phosphorus(III) chloride and gaseous chlorine. When the three gases are present in a closed container the system reaches equilibrium. PCl 5(g) PCl 3(g) + Cl 2(g) …
- Question 5
This question is about sulfuric acid, H2SO4, and salts that can be made from sulfuric acid. (a) Sulfuric acid is manufactured by the Contact process. stage 1 Molten sulfur burns in air to produce sulfur dioxide. stage 2 Sulfur dioxide …
- Question 6
(a) Chloroethene (CH2=CHCl ) can be manufactured from 1,2-dichloroethane (CH2Cl CH2Cl ). The equation can be represented as shown. H C Cl …
Other Chemistry papers from Oct/Nov 2022
- 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