Cambridge IGCSE ยท 0620 ยท Paper 3 ยท Theory (Core)
Chemistry 0620/33 Oct/Nov 2024 past paper
Cambridge IGCSE Chemistry (0620) Paper 3 (Theory (Core)), variant 3, 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
- 45
File names: 0620_w24_qp_33 ยท 0620_w24_ms_33
Grade thresholds for 0620/33 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 |
|---|---|---|---|---|
| 45 | 38 | 31 | 24 | 18 |
Topics in this paper
Which syllabus chapters 0620/33 Oct/Nov 2024 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Atoms, elements and compounds | 3 | 27 |
| Stoichiometry | 2 | 19 |
| Organic chemistry | 1 | 13 |
| Experimental techniques and chemical analysis | 1 | 11 |
| Acids, bases and salts | 1 | 10 |
Questions in 0620/33 Oct/Nov 2024
- Question 1
Fig. 1.1 shows part of the Periodic Table. I II III IV V VI VII VIII Li Al N K Rb Ca Zn Au Ag Fe Cr H I Ne He Fig. 1.1 (a) Answer the following questions using only โฆ
- Question 2
Oxygen, water and ethene have simple molecular structures. (a) (i) State the percentage of oxygen in clean, dry air. (ii) Complete Fig. 2.1 to show the dot-and-cross diagram for a molecule of water. Show outer shell electrons only. โฆ
- Question 3
(a) The list shows some gases in a sample of water. 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 contains harmful substances. 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 in ยฐC boiling point in ยฐC atomic volume in cm3 / mol ๏ฌuorine โ220 โ188 chlorine โฆ
- Question 6
This question is about metals. (a) Metals are malleable and ductile. State three other typical physical properties of metals. โฆ
- Question 7
This question is about acids, bases and salts. (a) Crystals of zinc chloride can be made by warming excess solid zinc oxide with dilute hydrochloric acid. ZnO(s) + 2HCl (aq) โ ZnCl 2(aq) โฆ
- Question 8
(a) A student investigates the reaction of small pieces of magnesium oxide with excess dilute hydrochloric acid of three di๏ฌerent concentrations. The time taken for each reaction to ๏ฌnish is recorded. The three concentrations of the acid are: โ 0.4 โฆ
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