Cambridge IGCSE · 0620 · Paper 4 · Theory (Extended)
Chemistry 0620/42 Oct/Nov 2017 past paper
Cambridge IGCSE Chemistry (0620) Paper 4 (Theory (Extended)), variant 2, Oct/Nov 2017: the question paper and its official mark scheme, 5 questions worth 80 marks, with the grade thresholds. Free to open, no account needed.
- Questions
- 5
- Marks
- 80
- Grade A from
- 46
File names: 0620_w17_qp_42 · 0620_w17_ms_42
Grade thresholds for 0620/42 Oct/Nov 2017
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 |
|---|---|---|---|---|---|---|
| 46 | 36 | 26 | 21 | 17 | 13 | 9 |
Topics in this paper
Which syllabus chapters 0620/42 Oct/Nov 2017 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Organic chemistry | 1 | 30 |
| Chemical reactions | 2 | 19 |
| Electrochemistry | 1 | 17 |
| Atoms, elements and compounds | 1 | 14 |
Questions in 0620/42 Oct/Nov 2017
- Question 1
(a) Dust particles in the air move around in a random way. (i) What term describes the random movement of the dust particles? (ii) Identify the particles in the air which cause the random movement of the dust particles. (iii) …
- Question 2
(a) Complete the table to show the electronic structure of the atoms and ions. electronic structure F 2,7 Si Ca2+ N3– (b) Predict the formula of the compound formed between Ca2+ and N3–. (c) Draw a dot-and-cross diagram to show …
- Question 3
The chemical equation for the complete combustion of ethanol, C2H5OH, is shown. C2H5OH + 3O2 2CO2 + 3H2O The energy released when one mole of ethanol undergoes complete combustion is 1280 kJ. Part of the energy level diagram for this …
- Question 4
A student sets up the following electrolysis experiment. graphite electrodes dilute aqueous sodium chloride wire bulb …
- Question 5
Some chemical reactions are reversible. (a) Aqueous potassium chromate(VI), K2CrO4, is a yellow solution. Aqueous potassium dichromate(VI), K2Cr2O7, is an orange solution. The two compounds interconvert when the pH of the solution changes. 2K2CrO4 + H2SO4 K2Cr2O7 + K2SO4 + …
Other Chemistry papers from Oct/Nov 2017
- 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)
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- 0620/31 Theory (Core)
- 0620/32 Theory (Core)
- 0620/33 Theory (Core)
- 0620/41 Theory (Extended)
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- 0620/61 Alternative to Practical
- 0620/62 Alternative to Practical
- 0620/63 Alternative to Practical