Cambridge IGCSE · 0620 · Paper 4 · Theory (Extended)
Chemistry 0620/42 May/June 2016 past paper
Cambridge IGCSE Chemistry (0620) Paper 4 (Theory (Extended)), variant 2, May/June 2016: 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
- 50
File names: 0620_s16_qp_42 · 0620_s16_ms_42
Grade thresholds for 0620/42 May/June 2016
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 |
|---|---|---|---|---|---|---|
| 50 | 41 | 33 | 26 | 18 | 14 | 10 |
Topics in this paper
Which syllabus chapters 0620/42 May/June 2016 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Atoms, elements and compounds | 2 | 19 |
| Electrochemistry | 1 | 18 |
| Metals | 1 | 18 |
| Organic chemistry | 1 | 13 |
| Acids, bases and salts | 1 | 12 |
Questions in 0620/42 May/June 2016
- Question 1
(a) For each of the following, give the name of an element from Period 2 (lithium to neon), which matches the description. Elements may be used once, more than once or not at all. (i) an element which is gaseous …
- Question 2
(a) (i) Define the term atomic number. (ii) Define the term nucleon number. (b) The table shows the number of protons, neutrons and electrons in some atoms or ions. Complete the table. The first line is given as an example. …
- Question 3
Gallium is a metallic element in Group III. It has similar properties to aluminium. (a) (i) Describe the structure and bonding in a metallic element. You should include a labelled diagram in your answer. (ii) Explain why metallic elements such …
- Question 4
Hydrogen can be manufactured from methane by steam reforming. CH4(g) + H2O(g) CO(g) + 3H2(g) The reaction is carried out using a nickel catalyst at temperatures between 700 °C and 1100 °C and using a pressure of one atmosphere. The …
- Question 5
(a) Hydrocarbons are compounds which contain hydrogen and carbon only. • 10 cm3 of a gaseous hydrocarbon, CxHy, are burned in 100 cm3 of oxygen, which is an excess of oxygen. • After cooling to room temperature and pressure, there …
- Question 6
Zinc is extracted from an ore called zinc blende, which consists mainly of zinc sulfide, ZnS. (a) (i) The zinc sulfide in the ore is first converted into zinc oxide. Describe how zinc oxide is made from zinc sulfide. (ii) …
Other Chemistry papers from May/June 2016
- 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