Cambridge IGCSE · 0620 · Paper 3 · Theory (Core)
Chemistry 0620/31 May/June 2023 past paper
Cambridge IGCSE Chemistry (0620) Paper 3 (Theory (Core)), variant 1, May/June 2023: 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
- 37
File names: 0620_s23_qp_31 · 0620_s23_ms_31
Grade thresholds for 0620/31 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 |
|---|---|---|---|---|
| 37 | 30 | 22 | 14 | 6 |
Topics in this paper
Which syllabus chapters 0620/31 May/June 2023 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Atoms, elements and compounds | 2 | 24 |
| Experimental techniques and chemical analysis | 2 | 19 |
| Organic chemistry | 1 | 12 |
| Chemistry of the environment | 1 | 12 |
| Metals | 1 | 8 |
| Chemical reactions | 1 | 5 |
Questions in 0620/31 May/June 2023
- Question 1
Fig. 1.1 shows part of the Periodic Table. I II III IV V VI VII VIII Na Al Cl …
- Question 2
(a) Table 2.1 shows some properties of the halogens. Table 2.1 halogen melting point in °C boiling point in °C density at room temperature and pressure in g / cm3 fluorine …
- Question 3
(a) Water from natural sources contains dissolved gases. Choose from the list, the gas that is essential for aquatic life. Draw a circle around your chosen answer. argon hydrogen nitrogen oxygen (b) Polluted water may contain harmful substances such as …
- Question 4
This question is about sulfur and compounds of sulfur. (a) Sulfur has several isotopes. Define the term isotopes. (b) Deduce the number of protons, neutrons and electrons in the sulfide ion shown. 36S2– 16 number of protons number of neutrons …
- Question 5
This question is about metals. (a) Iron is a transition element. Potassium is an element in Group I of the Periodic Table. State two differences in the physical properties of iron compared to potassium. …
- Question 6
(a) A student investigates the reaction of small pieces of zinc of the same mass and size with three different concentrations of dilute hydrochloric acid in the presence of a catalyst. The three concentrations of dilute hydrochloric acid are: ● …
- Question 7
(a) Fig. 7.1 shows the displayed formula of mesaconic acid. …
- Question 8
This question is about nitrogen and compounds of nitrogen. (a) Nitrogen is a non-metal. Nitrogen is a poor electrical conductor. Describe two other physical properties which are typical of non-metals. …
Other Chemistry papers from May/June 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)
- 0620/32 Theory (Core)
- 0620/33 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