Cambridge IGCSE · 0620 · Paper 3 · Theory (Core)
Chemistry 0620/31 May/June 2020 past paper
Cambridge IGCSE Chemistry (0620) Paper 3 (Theory (Core)), variant 1, 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_31 · 0620_s20_ms_31
Topics in this paper
Which syllabus chapters 0620/31 May/June 2020 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Organic chemistry | 2 | 22 |
| Acids, bases and salts | 1 | 11 |
| Chemical reactions | 1 | 11 |
| Atoms, elements and compounds | 1 | 10 |
| Electrochemistry | 1 | 10 |
| The Periodic Table | 1 | 9 |
| Metals | 1 | 7 |
Questions in 0620/31 May/June 2020
- Question 1
(a) A list of symbols and formulae is shown. Al 3+ CH4 CO2 Fe3+ N2 NO2 O2 O2– Zn2+ Answer the following questions about these symbols and formulae. Each symbol or formula may be used once, more than once or …
- Question 2
A solution is obtained by filtering a mixture of soil and water. The table shows the mass of some of the ions in 1000 cm3 of this solution. name of ion formula of ion mass of ion in 1000 cm3 …
- Question 3
Many compounds and elements have important uses. (a) Complete the table to show the name, formula and use of each compound and element. name of compound or element number of atoms in the formula formula use chlorine chlorine = 2 …
- Question 4
The properties of five alkenes at room temperature are shown in the table. alkene number of carbon atoms in a molecule state at room temperature density in g / cm3 boiling point / °C ethene 2 gas 0.0012 –104 propene …
- Question 5
When concentrated hydrochloric acid is electrolysed, gases are produced at the electrodes. The incomplete apparatus is shown. concentrated hydrochloric acid power supply …
- Question 6
Acids have characteristic properties. (a) Hydrochloric acid reacts with magnesium. Name the products of this reaction and give the observations. (b) The rate of reaction of iron(II) carbonate with hydrochloric acid can be determined by measuring the time taken to …
- Question 7
The structure of myrcene is shown. …
- Question 8
The diagram shows part of the structures of sodium bromide and sulfur. Na+ Br – Na+ Br – Br – Na+ Br – Na+ Na+ Br – Na+ Br – Br – Na+ Br – Na+ sodium bromide sulfur (a) …
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