Cambridge IGCSE · 0620 · Paper 4 · Theory (Extended)
Chemistry 0620/42 Oct/Nov 2018 past paper
Cambridge IGCSE Chemistry (0620) Paper 4 (Theory (Extended)), variant 2, Oct/Nov 2018: 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
- 51
File names: 0620_w18_qp_42 · 0620_w18_ms_42
Grade thresholds for 0620/42 Oct/Nov 2018
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 |
|---|---|---|---|---|---|---|
| 51 | 41 | 30 | 26 | 22 | 18 | 14 |
Topics in this paper
Which syllabus chapters 0620/42 Oct/Nov 2018 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Chemical reactions | 3 | 47 |
| Organic chemistry | 1 | 17 |
| Atoms, elements and compounds | 1 | 16 |
Questions in 0620/42 Oct/Nov 2018
- Question 1
Element X can undergo the following physical changes. gaseous X boiling or evaporation liquid X solid …
- Question 2
Magnesium, calcium and strontium are Group II elements. (a) Complete the table to show the arrangement of electrons in a calcium atom. shell number …
- Question 3
Sulfur is an important element. (a) Explain how burning fossil fuels containing sulfur leads to the formation of acid rain. (b) Sulfuric acid is manufactured by the Contact process. One step in the Contact process involves a reversible reaction in …
- Question 4
A student investigated the progress of the reaction between dilute hydrochloric acid, HCl, and an excess of large pieces of marble, CaCO3, using the apparatus shown. gas syringe dilute hydrochloric acid an excess of large pieces of marble (a) A …
- Question 5
Alkynes are a homologous series of unsaturated hydrocarbons. All members contain a C≡C triple bond. (a) Complete the table showing information about the first three alkynes. formula C2H2 C3H4 structure H–C≡C–H H–C≡C–CH3 H–C≡C–CH2–CH3 name ethyne butyne (b) Complete the …
Other Chemistry papers from Oct/Nov 2018
- 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)
- 0620/41 Theory (Extended)
- 0620/43 Theory (Extended)
- 0620/61 Alternative to Practical
- 0620/62 Alternative to Practical
- 0620/63 Alternative to Practical