Cambridge IGCSE · 0620 · Paper 4 · Theory (Extended)
Chemistry 0620/43 May/June 2018 past paper
Cambridge IGCSE Chemistry (0620) Paper 4 (Theory (Extended)), variant 3, May/June 2018: 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
- 49
File names: 0620_s18_qp_43 · 0620_s18_ms_43
Grade thresholds for 0620/43 May/June 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 |
|---|---|---|---|---|---|---|
| 49 | 38 | 25 | 20 | 16 | 12 | 8 |
Topics in this paper
Which syllabus chapters 0620/43 May/June 2018 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Chemical reactions | 2 | 21 |
| Organic chemistry | 1 | 18 |
| Atoms, elements and compounds | 1 | 15 |
| Electrochemistry | 1 | 13 |
| Stoichiometry | 1 | 13 |
Questions in 0620/43 May/June 2018
- Question 1
The following are the symbols and formulae of some elements and compounds. Ar Ca(OH)2 Cl 2 CO2 Cu Fe SO2 V2O5 Answer the following questions using only the elements or compounds in the list. Each element or compound may be …
- Question 2
(a) 29Al is a radioactive isotope of aluminium. The only non‑radioactive isotope of aluminium is 27Al. (i) Describe, in terms of protons, neutrons and electrons, how the isotopes 29Al and 27Al are similar and how they are different. how they …
- Question 3
Cobalt is a transition element. Potassium is in Group I of the Periodic Table. (a) State one physical property that is similar for cobalt and potassium. (b) (i) State one physical property that is different for cobalt and potassium. (ii) …
- Question 4
Ethanol is a member of the homologous series of alcohols. (a) Give two characteristics of members of a homologous series. …
- Question 5
(a) Nickel(II) iodide crystals are hydrated. A sample of hydrated nickel(II) iodide crystals has the following composition by mass: Ni, …
- Question 6
Calcium chlorate(V), Ca(Cl O3)2, is made by reacting calcium hydroxide with chlorine gas. 6Ca(OH)2 + 6Cl 2 Ca(Cl O3)2 + 5CaCl …
Other Chemistry papers from May/June 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)
- 0620/42 Theory (Extended)
- 0620/61 Alternative to Practical
- 0620/62 Alternative to Practical
- 0620/63 Alternative to Practical