Cambridge IGCSE · 0620 · Paper 3 · Theory (Core)
Chemistry 0620/33 Oct/Nov 2022 past paper
Cambridge IGCSE Chemistry (0620) Paper 3 (Theory (Core)), variant 3, Oct/Nov 2022: the question paper and its official mark scheme, 8 questions worth 80 marks, with the grade thresholds. Free to open, no account needed.
- Questions
- 8
- Marks
- 80
- Grade A from
- 45
File names: 0620_w22_qp_33 · 0620_w22_ms_33
Grade thresholds for 0620/33 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 |
|---|---|---|---|---|
| 45 | 39 | 32 | 25 | 18 |
Topics in this paper
Which syllabus chapters 0620/33 Oct/Nov 2022 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Organic chemistry | 3 | 24 |
| Metals | 1 | 13 |
| Atoms, elements and compounds | 1 | 13 |
| Acids, bases and salts | 1 | 12 |
| States of matter | 1 | 11 |
| Chemistry of the environment | 1 | 7 |
Questions in 0620/33 Oct/Nov 2022
- Question 1
(a) The structures of seven compounds or elements, …
- Question 2
(a) The table compares the percentage by mass of the elements in the whole Earth and in the oceans. element percentage by mass in the whole Earth percentage by mass in the oceans calcium 1.1 0.1 chlorine less than 0.01 …
- Question 3
This question is about fuels and energy production. (a) The diagram shows the apparatus used to compare the energy released when 100 cm3 of water is heated by burning different liquid fuels, …
- Question 4
(a) The table shows some properties of four Group I elements. element melting point / °C boiling point / °C hardness / MPa lithium …
- Question 5
This question is about compounds of nitrogen and fertilisers. (a) Ammonium chloride is heated with sodium hydroxide. NH4Cl + NaOH → NH3 + NaCl + H2O Choose from the list the word that describes this reaction. Draw a circle around …
- Question 6
This question is about acids, bases and salts. (a) Describe the reaction of excess dilute hydrochloric acid with magnesium and with magnesium carbonate. Give the names of the products and any observations. reaction with magnesium ● products ● observations reaction …
- Question 7
(a) The structure of an organic compound, S, is shown. …
- Question 8
This question is about metals. (a) (i) Copper is a transition element. Sodium is an element in Group I of the Periodic Table. Copper is harder than sodium. Give two other ways in which the physical properties of copper differ …
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)
- 0620/41 Theory (Extended)
- 0620/42 Theory (Extended)
- 0620/43 Theory (Extended)
- 0620/61 Alternative to Practical
- 0620/62 Alternative to Practical
- 0620/63 Alternative to Practical