Cambridge IGCSE · 0620 · Paper 4 · Theory (Extended)
Chemistry 0620/41 Oct/Nov 2019 past paper
Cambridge IGCSE Chemistry (0620) Paper 4 (Theory (Extended)), variant 1, Oct/Nov 2019: the question paper and its official mark scheme, 7 questions worth 80 marks, with the grade thresholds. Free to open, no account needed.
- Questions
- 7
- Marks
- 80
- Grade A from
- 48
File names: 0620_w19_qp_41 · 0620_w19_ms_41
Grade thresholds for 0620/41 Oct/Nov 2019
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 |
|---|---|---|---|---|---|---|
| 48 | 37 | 26 | 22 | 18 | 14 | 10 |
Topics in this paper
Which syllabus chapters 0620/41 Oct/Nov 2019 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Organic chemistry | 2 | 30 |
| Chemistry of the environment | 1 | 16 |
| Stoichiometry | 1 | 11 |
| Experimental techniques and chemical analysis | 1 | 8 |
| Chemical reactions | 1 | 8 |
| Acids, bases and salts | 1 | 7 |
Questions in 0620/41 Oct/Nov 2019
- Question 1
This question is about ions and ionic compounds. (a) Choose from the following list of ions to answer the questions. Br – Ca2+ Cl – Cr3+ Cu2+ K+ Li+ Na+ SO3 2– SO4 2– Each ion may be used once, …
- Question 2
(a) Sulfur exists as a number of different isotopes. What is meant by the term isotopes? (b) A sulfide ion has the symbol shown. …
- Question 3
This question is about metals and metal oxides. (a) Most metals have a high melting point. State one other physical property that all metals have. (b) Iron often rusts. Name the two substances, other than iron, that must be present …
- Question 4
Insoluble salts can be made by precipitation reactions. A student mixed solutions of some soluble salts. The results the student obtained are shown in the table. second salt solution Co(NO3)2(aq) AgNO3(aq) Pb(NO3)2(aq) first salt solution NaI(aq) no change yellow precipitate …
- Question 5
(a) Part of the structure of synthetic polymer A is shown. C CH3 CH3 CH3 CH3 C CH3 CH3 C CH3 CH3 C CH3 CH3 C CH3 CH3 C (i) What type of synthetic polymer is A? (ii) Deduce the …
- Question 6
Dilute hydrochloric acid, HCl (aq), reacts with aqueous sodium carbonate, Na2CO3(aq). The chemical equation for the reaction is shown. 2HCl + Na2CO3 2NaCl + CO2 …
- Question 7
This question is about ethanol. (a) Ethanol that is suitable for use as a fuel can be manufactured from sugars such as glucose, C6H12O6, by a two-step process. Describe how this can be done. In your answer, include: ● ● …
Other Chemistry papers from Oct/Nov 2019
- 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)
- 0620/31 Theory (Core)
- 0620/32 Theory (Core)
- 0620/33 Theory (Core)
- 0620/42 Theory (Extended)
- 0620/43 Theory (Extended)
- 0620/61 Alternative to Practical
- 0620/62 Alternative to Practical
- 0620/63 Alternative to Practical