Cambridge O Level · 5070 · Paper 2 · Theory

Chemistry 5070/22 Oct/Nov 2025 past paper

Cambridge O Level Chemistry (5070) Paper 2 (Theory), variant 2, Oct/Nov 2025: the question paper and its official mark scheme, 10 questions worth 80 marks, with the grade thresholds. Free to open, no account needed.

Questions: 10
Marks: 80
Grade A from: 57

Open the question paper Mark scheme

File names: 5070_w25_qp_22 · 5070_w25_ms_22

Grade thresholds for 5070/22 Oct/Nov 2025

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
57	40	22	17	11

Topics in this paper

Which syllabus chapters 5070/22 Oct/Nov 2025 tested, by marks. Each chapter links to every past-paper question on it.

Chapter	Questions	Marks
States of matter	2	16
Atoms, elements and compounds	2	15
Stoichiometry	2	13
Chemical reactions	1	11
Acids, bases and salts	1	9
Electrochemistry	1	9
Metals	1	7

Questions in 5070/22 Oct/Nov 2025

Question 1Stoichiometry · 6 marks
Choose from the following compounds to answer the questions. compound A CH3OH compound B HCOOH compound C CH3—CH2OH compound D CH3—COOCH3 compound E H2C—CH2 H2C—CH2 — — compound F CH3—CH2—CH2—CH3 compound G CH3—CH2—CH=CH2 compound H CH3—CH2—CH2—COOH Each compound can be …
Question 2Atoms, elements and compounds · 4 marks
A sample of titanium found on an asteroid contains four isotopes. Table 2.1 shows the percentage abundances of these four isotopes. Table 2.1 isotope percentage abundance …
Question 3Metals · 7 marks
The equation for the reaction between aluminium and dilute hydrochloric acid is shown. 2Al (s) + 6HCl (aq) 2Al Cl 3(aq) …
Question 4States of matter · 8 marks
Fluorine, chlorine, bromine and iodine are elements in Group VII. (a) Fluorine has a low boiling point. It is a gas at room temperature. (i) Describe the arrangement and motion of molecules in fluorine gas. (ii) Explain why fluorine is …
Question 5Chemical reactions · 11 marks
Nickel is a transition element. (a) One of the properties of nickel is that it is a catalyst. State a reaction that uses nickel as a catalyst. (b) State one other chemical property of nickel that is typical of a …
Question 6Atoms, elements and compounds · 11 marks
This question is about the covalent compound hydrogen peroxide. Fig. 6.1 shows the displayed formula of hydrogen peroxide. …
Question 7States of matter · 8 marks
PET is a polyester. It is a condensation polymer. Fig. 7.1 shows the two monomers needed to make PET. …
Question 8Acids, bases and salts · 9 marks
Fig. 8.1 shows the displayed formula of an unsaturated carboxylic acid, …
Question 9Electrochemistry · 9 marks
Hydrated zinc chloride is a white solid. (a) State the meaning of the term hydrated. (b) Aqueous ammonia is added dropwise until in excess to a small volume of aqueous zinc chloride. Describe the observations during this addition. (c) Describe …
Question 10Stoichiometry · 7 marks
Water is an important part of the environment. (a) Rivers and lakes are natural sources of water. (i) Name one substance in river water that may be harmful. Explain why this substance may be harmful. substance explanation (ii) Name one …

Other Chemistry papers from Oct/Nov 2025

Questions students ask

Where can I get the 5070/22 Oct/Nov 2025 mark scheme?

Open the mark scheme above - it is the official Cambridge scheme for this exact paper (5070_w25_ms_22), and on a wide screen it sits beside the question you are reading.

What was the grade threshold for an A in 5070/22 Oct/Nov 2025?

57 marks out of 80, a C needed 22.

Which topics came up in 5070/22 Oct/Nov 2025?

Mostly States of matter, Atoms, elements and compounds, Stoichiometry. The full list is in the table above.

Do I need an account to open 5070/22 Oct/Nov 2025?

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.