Cambridge IGCSE ยท 0620 ยท Paper 3 ยท Theory (Core)
Chemistry 0620/31 Oct/Nov 2024 past paper
Cambridge IGCSE Chemistry (0620) Paper 3 (Theory (Core)), variant 1, Oct/Nov 2024: 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
- 43
File names: 0620_w24_qp_31 ยท 0620_w24_ms_31
Grade thresholds for 0620/31 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 |
|---|---|---|---|---|
| 43 | 37 | 30 | 23 | 16 |
Topics in this paper
Which syllabus chapters 0620/31 Oct/Nov 2024 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Experimental techniques and chemical analysis | 2 | 22 |
| Atoms, elements and compounds | 2 | 19 |
| Organic chemistry | 1 | 13 |
| Acids, bases and salts | 1 | 10 |
| Metals | 1 | 8 |
| Stoichiometry | 1 | 8 |
Questions in 0620/31 Oct/Nov 2024
- Question 1
(a) Fig. 1.1 shows part of the Periodic Table. I II III IV V VI VII VIII Na Al P S Cl K Ca Ni H Br I F Ar Fig. 1.1 Answer the following questions using only the elements โฆ
- Question 2
Nitrogen molecules are diatomic. (a) (i) State the meaning of the term diatomic. (ii) State the percentage of nitrogen in clean, dry air. (b) Ammonia has a simple molecular structure. Complete Fig. 2.1 to show the dot-and-cross diagram for a โฆ
- Question 3
(a) Polluted water can contain harmful substances such as plastics and phosphates. State two other types of harmful substance in polluted water. โฆ
- Question 4
(a) Fig. 4.1 shows the displayed formula of compound โฆ
- Question 5
(a) Table 5.1 shows some properties of ๏ฌve halogens. Table 5.1 halogen melting point / ยฐC boiling point / ยฐC atomic radius / nm ๏ฌuorine โ220 โ188 chlorine โฆ
- Question 6
This question is about metals. (a) Metals are good electrical conductors. State three other typical physical properties of metals. โฆ
- Question 7
This question is about acids, bases and salts. (a) Crystals of potassium chloride can be made by reacting an acid with an alkali. (i) Name the acid and the alkali used. acid alkali (ii) Choose from the list the type โฆ
- Question 8
(a) A student investigates the reaction of small pieces of zinc with excess dilute sulfuric acid of three di๏ฌerent concentrations. The time taken for each reaction to ๏ฌnish is recorded. The three concentrations of the acid are: โ 0.2 mol โฆ
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