Cambridge IGCSE · 0620 · Paper 3 · Theory (Core)
Chemistry 0620/33 May/June 2026 past paper
Cambridge IGCSE Chemistry (0620) Paper 3 (Theory (Core)), variant 3, May/June 2026: 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_s26_qp_33 · 0620_s26_ms_33
Topics in this paper
Which syllabus chapters 0620/33 May/June 2026 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Metals | 2 | 21 |
| Chemical reactions | 1 | 13 |
| Organic chemistry | 1 | 12 |
| States of matter | 1 | 9 |
| Chemistry of the environment | 1 | 9 |
| Atoms, elements and compounds | 1 | 8 |
| The Periodic Table | 1 | 8 |
Questions in 0620/33 May/June 2026
- Question 1
Six substances, A to F, are shown in Figure 1.1. O2 NH3 …
- Question 2
The halogens are in Group VII of the Periodic Table. (a) Halogens exist as diatomic molecules. Explain what is meant by the term diatomic. (b) (i) Aqueous bromine reacts with aqueous sodium iodide. Complete the symbol equation for this reaction. …
- Question 3
The equation for the reaction of calcium carbonate with dilute hydrochloric acid is shown. CaCO3(s) + 2HCl (aq) CaCl 2(aq) + CO2(g) …
- Question 4
Table 4.1 shows the properties of some alkanes. Table 4.1 alkane number of carbon atoms in one molecule melting point in °C boiling point in °C density of liquid alkane in g / cm3 methane …
- Question 5
Three states of matter are solid, liquid and gas. (a) State two general properties of a gas. …
- Question 6
Titanium is a metal. (a) (i) State the period number of titanium in the Periodic Table. (ii) Deduce the number of electrons, neutrons and protons in the titanium ion shown. …
- Question 7
(a) Natural water sources can be polluted with sewage and nitrates. State why sewage and nitrates in river water are harmful. sewage nitrates (b) Some fertilisers contain nitrates. State why fertilisers are used. (c) Sea water contains sodium ions. Name …
- Question 8
(a) Stainless steel is an alloy of iron. (i) Give one reason why alloys are more useful than pure metals. (ii) Brass is an alloy. Name the two metals in brass. and (b) Five metals are shown. copper gold iron …
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