Cambridge IGCSE · 0620 · Paper 4 · Theory (Extended)
Chemistry 0620/42 May/June 2023 past paper
Cambridge IGCSE Chemistry (0620) Paper 4 (Theory (Extended)), variant 2, May/June 2023: 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
- 48
File names: 0620_s23_qp_42 · 0620_s23_ms_42
Grade thresholds for 0620/42 May/June 2023
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 |
|---|---|---|---|---|---|---|
| 48 | 36 | 22 | 18 | 14 | 11 | 8 |
Topics in this paper
Which syllabus chapters 0620/42 May/June 2023 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Acids, bases and salts | 1 | 21 |
| Organic chemistry | 2 | 18 |
| Atoms, elements and compounds | 1 | 18 |
| Chemical reactions | 1 | 17 |
| Metals | 1 | 6 |
Questions in 0620/42 May/June 2023
- Question 1
A list of oxides, A to H, is shown. A calcium oxide B aluminium oxide C silicon(IV) oxide D sulfur dioxide E carbon dioxide F iron(III) oxide G silver oxide H carbon monoxide Answer the following questions about the oxides, …
- Question 2
Fluorine, chlorine and bromine are in Group VII of the Periodic Table. (a) State the name given to Group VII elements. (b) Explain why Group VII elements have similar chemical properties. (c) Complete Table 2.1 to show the colour and …
- Question 3
Over 200 million tonnes of sulfuric acid are manufactured every year. (a) State the name of the process used to manufacture sulfuric acid. (b) Part of the manufacture of sulfuric acid involves converting sulfur dioxide to sulfur trioxide. (i) Describe …
- Question 4
Solid sodium hydroxide is a base which dissolves to form an aqueous solution, NaOH(aq). (a) State what is meant by the term base. (b) State the term given to a base which dissolves to form an aqueous solution. (c) State …
- Question 5
Propane and propene both react with chlorine. (a) When a molecule of propane, C3H8, reacts with chlorine in the presence of ultraviolet light, one atom of hydrogen is replaced by one atom of chlorine. (i) State the term given to …
- Question 6
Carboxylic acids can be converted to esters. (a) Name the ester formed when butanoic acid, CH3CH2CH2COOH, reacts with ethanol, CH3CH2OH. (b) Identify the other product formed in this reaction. (c) Deduce the empirical formula of the ester formed. (d) PET …
Other Chemistry papers from May/June 2023
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- 0620/61 Alternative to Practical
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