Cambridge IGCSE · 0620 · Paper 4 · Theory (Extended)
Chemistry 0620/43 May/June 2020 past paper
Cambridge IGCSE Chemistry (0620) Paper 4 (Theory (Extended)), variant 3, May/June 2020: the question paper and its official mark scheme, 8 questions worth 80 marks. Free to open, no account needed.
- Questions
- 8
- Marks
- 80
File names: 0620_s20_qp_43 · 0620_s20_ms_43
Topics in this paper
Which syllabus chapters 0620/43 May/June 2020 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Stoichiometry | 2 | 24 |
| Metals | 1 | 14 |
| Experimental techniques and chemical analysis | 2 | 13 |
| Atoms, elements and compounds | 1 | 13 |
| Acids, bases and salts | 1 | 10 |
| States of matter | 1 | 6 |
Questions in 0620/43 May/June 2020
- Question 1
(a) The structures of five organic compounds, …
- Question 2
Ammonia is manufactured by the Haber process. (a) The equation for the reaction is shown. …
- Question 3
Chlorine is in Group VII of the Periodic Table. (a) Two isotopes of chlorine are chlorine‑35 and chlorine‑37. (i) State why these two isotopes of chlorine have the same chemical properties. (ii) Complete the table to show the number of …
- Question 4
(a) Filtration and chlorination are two stages in water treatment. State the purpose of each stage. filtration chlorination …
- Question 5
(a) Complete the table about solids, liquids and gases. particle separation particle arrangement type of motion solid regular vibrate only liquid touching random gas apart random (b) The graph shows the change in temperature as a sample of a …
- Question 6
(a) An endothermic reaction occurs when calcium nitrate is heated. (i) Balance the equation for this reaction. Ca(NO3)2 → CaO + NO2 + O2 (ii) State the type of reaction shown by the equation. (b) Describe the test for a …
- Question 7
Aluminium is extracted by electrolysis. Iron is extracted from its ore by reduction with carbon. (a) What is meant by the term electrolysis? (b) Name the main ore of aluminium. (c) (i) Explain why aluminium cannot be extracted by reduction …
- Question 8
(a) Part of the synthetic polymer, nylon, is shown in the diagram. …
Other Chemistry papers from May/June 2020
- 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)
- 0620/41 Theory (Extended)
- 0620/42 Theory (Extended)
- 0620/61 Alternative to Practical
- 0620/62 Alternative to Practical
- 0620/63 Alternative to Practical