Cambridge O Level · 5070 · Paper 2 · Theory

Chemistry 5070/22 Oct/Nov 2023 past paper

Cambridge O Level Chemistry (5070) Paper 2 (Theory), variant 2, Oct/Nov 2023: the question paper and its official mark scheme, 9 questions worth 80 marks, with the grade thresholds. Free to open, no account needed.

Questions: 9
Marks: 80
Grade A from: 56

Open the question paper Mark scheme

File names: 5070_w23_qp_22 · 5070_w23_ms_22

Grade thresholds for 5070/22 Oct/Nov 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
56	41	25	20	15

Topics in this paper

Which syllabus chapters 5070/22 Oct/Nov 2023 tested, by marks. Each chapter links to every past-paper question on it.

Chapter	Questions	Marks
Organic chemistry	2	17
Chemistry of the environment	2	13
Atoms, elements and compounds	1	13
Acids, bases and salts	1	11
Electrochemistry	1	10
Stoichiometry	1	9
Chemical energetics	1	7

Questions in 5070/22 Oct/Nov 2023

Question 1Chemistry of the environment · 5 marks
Choose from the list of compounds to answer these questions. ammonia ethanol glucose magnesium chloride magnesium oxide methane nitrogen dioxide phosphorus(V) chloride poly(ethene) sodium bromide water Each compound may be used once, more than once or not at all. Identify …
Question 2Atoms, elements and compounds · 13 marks
This question is about metals. (a) Chromium is a transition element. Sodium is an element in Group I of the Periodic Table. State two physical properties of chromium that are different to those of sodium. …
Question 3Chemistry of the environment · 8 marks
A student investigates the reaction of large pieces of calcium carbonate with dilute hydrochloric acid at 25 °C. The hydrochloric acid is in excess. (a) Complete the equation for this reaction by adding state symbols. CaCO3( ) + 2HCl ( …
Question 4Electrochemistry · 10 marks
(a) Concentrated aqueous magnesium iodide is electrolysed using graphite electrodes. Predict the product at each electrode. anode cathode (b) Molten magnesium iodide is electrolysed using graphite electrodes. Construct the ionic half-equation for the reaction at each electrode when molten magnesium …
Question 5Organic chemistry · 10 marks
(a) Fig. 5.1 shows the displayed formula of compound …
Question 6Chemical energetics · 7 marks
(a) Steam reacts with carbon to produce carbon monoxide and hydrogen. steam + carbon carbon monoxide + hydrogen The forward reaction is endothermic. (i) Explain, in terms of bond making and bond breaking, why this reaction is endothermic. (ii) The …
Question 7Acids, bases and salts · 11 marks
(a) Dilute hydrochloric acid reacts with aqueous sodium carbonate. 2HCl + Na2CO3 2NaCl …
Question 8Organic chemistry · 7 marks
(a) The equation for the reaction of carbon monoxide with hydrogen at a high temperature in a closed container is shown. CO(g) + 2H2(g) CH3OH(g) methanol The forward reaction is exothermic. (i) Predict and explain the effect, if any, on …
Question 9Stoichiometry · 9 marks
(a) Table 9.1 shows the melting points and relative electrical conductivities of three elements. Table 9.1 calcium carbon (diamond) iodine melting point …

Other Chemistry papers from Oct/Nov 2023

Questions students ask

Where can I get the 5070/22 Oct/Nov 2023 mark scheme?

Open the mark scheme above - it is the official Cambridge scheme for this exact paper (5070_w23_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 2023?

56 marks out of 80, a C needed 25.

Which topics came up in 5070/22 Oct/Nov 2023?

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

Do I need an account to open 5070/22 Oct/Nov 2023?

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.