Cambridge IGCSE · 0620 · Paper 3 · Theory (Core)
Chemistry 0620/32 Feb/March 2021 past paper
Cambridge IGCSE Chemistry (0620) Paper 3 (Theory (Core)), variant 2, Feb/March 2021: the question paper and its official mark scheme, 8 questions worth 80 marks, with the grade thresholds. Free to open, no account needed.
- Questions
- 8
- Marks
- 80
- Grade A from
- 41
File names: 0620_m21_qp_32 · 0620_m21_ms_32
Grade thresholds for 0620/32 Feb/March 2021
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 |
|---|---|---|---|---|
| 41 | 33 | 24 | 15 | 6 |
Topics in this paper
Which syllabus chapters 0620/32 Feb/March 2021 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Chemistry of the environment | 2 | 20 |
| Electrochemistry | 1 | 14 |
| Atoms, elements and compounds | 1 | 12 |
| Organic chemistry | 1 | 12 |
| Chemical reactions | 1 | 9 |
| States of matter | 1 | 8 |
| Acids, bases and salts | 1 | 5 |
Questions in 0620/32 Feb/March 2021
- Question 1
The diagram shows part of the Periodic Table. I II III IV V VI VII VIII Mg Al Ar Cl Br …
- Question 2
The table shows the mass of some of the ions in a 1000 cm3 sample of sea water. name of ion formula of ion mass of ion in 1000 cm3 of sea water / mg bromide Br – 65 calcium …
- Question 3
The table shows some properties of four halogens. element melting point in °C boiling point in °C density of liquid at melting point in g / cm3 fluorine –220 –188 chlorine –101 1.56 bromine …
- Question 4
A student investigates the reaction of magnesium powder with dilute hydrochloric acid. The magnesium is in excess. Mg + 2HCl → MgCl …
- Question 5
This question is about sulfur and compounds of sulfur. (a) Sulfur is a non-metal. Describe three physical properties which are typical of non-metals. …
- Question 6
The structure of compound A is shown. …
- Question 7
Sodium is manufactured by electrolysis. (a) Explain why sodium is manufactured by electrolysis and not by reduction with carbon. (b) The diagram shows the equipment for the production of sodium. + – power supply sodium molten sodium chloride (i) The …
- Question 8
Aqueous ammonia is an alkali. (a) Complete the dot-and-cross diagram to show the electron arrangement in a molecule of ammonia. …
Other Chemistry papers from Feb/March 2021
- 0620/12 Multiple choice (Core)
- 0620/22 Multiple choice (Extended)
- 0620/42 Theory (Extended)
- 0620/62 Alternative to Practical