Cambridge IGCSE · 0620 · Paper 4 · Theory (Extended)
Chemistry 0620/43 Oct/Nov 2020 past paper
Cambridge IGCSE Chemistry (0620) Paper 4 (Theory (Extended)), variant 3, Oct/Nov 2020: the question paper and its official mark scheme, 6 questions worth 80 marks, with the grade thresholds. Free to open, no account needed.
- Questions
- 6
- Marks
- 80
- Grade A from
- 47
File names: 0620_w20_qp_43 · 0620_w20_ms_43
Grade thresholds for 0620/43 Oct/Nov 2020
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 |
|---|---|---|---|---|---|---|
| 47 | 38 | 29 | 25 | 21 | 16 | 11 |
Topics in this paper
Which syllabus chapters 0620/43 Oct/Nov 2020 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Chemistry of the environment | 2 | 26 |
| States of matter | 1 | 17 |
| The Periodic Table | 1 | 16 |
| Organic chemistry | 1 | 14 |
| Atoms, elements and compounds | 1 | 7 |
Questions in 0620/43 Oct/Nov 2020
- Question 1
The names of nine substances are shown. aluminium oxide ammonia carbon monoxide anhydrous cobalt(II) chloride hydrated copper(II) sulfate iron(III) oxide nitrogen dioxide silver steel Answer the following questions using these substances. Each substance may be used once, more than once …
- Question 2
The table gives information about five particles, …
- Question 3
This question is about nitrogen and some of its compounds. (a) Complete the dot-and-cross diagram to show the electron arrangement in a molecule of nitrogen, N2. Show the outer shell electrons only. …
- Question 4
Zinc is manufactured from zinc blende. Zinc blende is an ore which consists mainly of zinc sulfide, ZnS. (a) Zinc blende is roasted in air. One of the products is zinc oxide. Name the other product formed in this reaction. …
- Question 5
Group I elements, Group VII elements and transition elements are found in different parts of the Periodic Table. (a) Describe the trend in the reactivity of Group I elements. (b) When potassium is added to water a chemical reaction occurs. …
- Question 6
(a) A carboxylic acid and an ester are structural isomers. (i) State the meaning of the term structural isomers. (ii) Draw the structures of the carboxylic acid and the ester which both contain two carbon atoms. Show all of the …
Other Chemistry papers from Oct/Nov 2020
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