Cambridge O Level · 5070 · Paper 2 · Theory

Chemistry 5070/22 Oct/Nov 2022 past paper

Cambridge O Level Chemistry (5070) Paper 2 (Theory), variant 2, Oct/Nov 2022: the question paper and its official mark scheme, 9 questions worth 85 marks, with the grade thresholds. Free to open, no account needed.

Questions: 9
Marks: 75
Grade A from: 50

Open the question paper Mark scheme

File names: 5070_w22_qp_22 · 5070_w22_ms_22

Grade thresholds for 5070/22 Oct/Nov 2022

The minimum raw marks Cambridge set for each grade on this component (out of 75). Thresholds change every session and variant, so always compare your score with the paper you actually sat.

A	B	C	D	E
50	36	23	17	12

Topics in this paper

Which syllabus chapters 5070/22 Oct/Nov 2022 tested, by marks. Each chapter links to every past-paper question on it.

Chapter	Questions	Marks
Organic chemistry	2	20
Atoms, elements and compounds	2	19
Electrochemistry	1	11
Chemical energetics	1	10
Chemistry of the environment	1	10
Chemical reactions	1	10
The Periodic Table	1	5

Questions in 5070/22 Oct/Nov 2022

Question 1The Periodic Table · 5 marks
The diagram shows part of the Periodic Table. I II III IV V VI VII VIII Mg Ca Fe Cu Zn …
Question 2Atoms, elements and compounds · 9 marks
This question is about halogens and halogen compounds. (a) (i) Draw a dot-and-cross diagram to show the arrangement of electrons in a chlorine molecule. Show only the outer shell electrons. (ii) State one use of chlorine. (b) Aqueous chlorine reacts …
Question 3Organic chemistry · 10 marks
The alkanes are a homologous series of hydrocarbons. (a) Give the general formula for the alkanes. (b) The structure of one isomer of an alkane is shown. …
Question 4Chemical energetics · 10 marks
This question is about ammonium sulfate, (NH4)2SO4. (a) Ammonium sulfate is a fertiliser. Explain why farmers put fertilisers on soil where crops are grown. (b) Explain why farmers do not add calcium hydroxide to the soil immediately after adding ammonium …
Question 5Electrochemistry · 11 marks
This question is about metals and metal compounds. (a) Zinc reacts with aqueous copper(II) ions. Zn + Cu2+ Zn2+ + Cu Explain why this reaction involves both oxidation and reduction. Use the equation and ideas about electron transfer in your …
Question 6Chemistry of the environment · 10 marks
This question is about nitrogen and oxides of nitrogen. (a) State the percentage of nitrogen by volume in dry air. (b) The equation represents the equilibrium between nitrogen and oxygen at a high temperature in a closed container. …
Question 7Organic chemistry · 10 marks
This question is about carboxylic acids and polymers. (a) The structure of an organic compound is shown. …
Question 8Atoms, elements and compounds · 10 marks
This question is about metals and metal compounds. (a) Describe, with the aid of a labelled diagram, the structure and bonding in metals. (b) The table shows the reactivity of four metals with cold water and with steam. metal reactivity …
Question 9Chemical reactions · 10 marks
(a) Magnesium carbonate reacts with dilute hydrochloric acid. MgCO3 + 2HCl MgCl 2 + CO2 + H2O When 25.0 cm3 of dilute hydrochloric acid is added to excess magnesium carbonate, the volume of carbon dioxide gas produced at room temperature …

Other Chemistry papers from Oct/Nov 2022

Questions students ask

Where can I get the 5070/22 Oct/Nov 2022 mark scheme?

Open the mark scheme above - it is the official Cambridge scheme for this exact paper (5070_w22_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 2022?

50 marks out of 75, a C needed 23.

Which topics came up in 5070/22 Oct/Nov 2022?

Mostly Organic chemistry, Atoms, elements and compounds, Electrochemistry. The full list is in the table above.

Do I need an account to open 5070/22 Oct/Nov 2022?

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.