Cambridge O Level · 5070 · Paper 2 · Theory

Chemistry 5070/22 May/June 2026 past paper

Cambridge O Level Chemistry (5070) Paper 2 (Theory), variant 2, 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

Open the question paper Mark scheme

File names: 5070_s26_qp_22 · 5070_s26_ms_22

Topics in this paper

Which syllabus chapters 5070/22 May/June 2026 tested, by marks. Each chapter links to every past-paper question on it.

Chapter	Questions	Marks
Organic chemistry	2	18
Acids, bases and salts	1	14
Metals	1	12
Stoichiometry	1	11
Electrochemistry	1	11
Chemical reactions	1	9
Atoms, elements and compounds	1	5

Questions in 5070/22 May/June 2026

Question 1Atoms, elements and compounds · 5 marks
Choose from the following compounds to answer the questions. Al 2O3 CH3COOH C2H4 C3H8 CuO H2 K2O LiBr NH2OH NH3 SO2 Each compound can be used once, more than once or not at all. State which compound: (a) is an …
Question 2Stoichiometry · 11 marks
Potassium superoxide, KO2, reacts with carbon dioxide to make potassium carbonate and oxygen. 4KO2(s) + 2CO2(g) 2K2CO3(s) …
Question 3Chemical reactions · 9 marks
The equation for one of the reactions that happens in a catalytic converter is shown. 2NO(g) …
Question 4Electrochemistry · 11 marks
Copper(II) sulfate is an ionic compound. (a) The electrolysis of aqueous copper(II) sulfate is done using copper or graphite electrodes. Complete Table 4.1 about the observations made in the two electrolysis reactions. Table 4.1 observation at anode observation at cathode …
Question 5Acids, bases and salts · 14 marks
Zinc chloride is prepared by reacting excess zinc with warm dilute hydrochloric acid. Zn(s) + 2HCl (aq) ZnCl 2(aq) …
Question 6Metals · 12 marks
Copper and aluminium are metals. Both metals have good electrical conductivity. (a) Explain why both metals have good electrical conductivity. Use ideas about structure and bonding. (b) Copper is a transition element but aluminium is not. Aluminium has a lower …
Question 7Organic chemistry · 9 marks
Chloroethene is a monomer used to make poly(chloroethene). The displayed formula of chloroethene is shown. …
Question 8Organic chemistry · 9 marks
This question is about carboxylic acids. (a) Vinegar is an aqueous solution containing ethanoic acid. During the production of vinegar, ethanoic acid is formed from ethanol. Water is also formed as a product. Describe the formation of ethanoic acid from …

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Questions students ask

Where can I get the 5070/22 May/June 2026 mark scheme?

Open the mark scheme above - it is the official Cambridge scheme for this exact paper (5070_s26_ms_22), and on a wide screen it sits beside the question you are reading.

Which topics came up in 5070/22 May/June 2026?

Mostly Organic chemistry, Acids, bases and salts, Metals. The full list is in the table above.

Do I need an account to open 5070/22 May/June 2026?

No. Every paper opens for free without signing in. A free account also saves your pen marks and records your score against the grade thresholds.