Cambridge IGCSE · 0620 · Paper 3 · Theory (Core)

Chemistry 0620/32 Oct/Nov 2021 past paper

Cambridge IGCSE Chemistry (0620) Paper 3 (Theory (Core)), variant 2, Oct/Nov 2021: the question paper and its official mark scheme, 8 questions worth 80 marks, with the grade thresholds. Free to open, no account needed.

Questions: 8
Marks: 80
Grade A from: 45

Open the question paper Mark scheme

File names: 0620_w21_qp_32 · 0620_w21_ms_32

Grade thresholds for 0620/32 Oct/Nov 2021

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
45	39	33	27	21

Topics in this paper

Which syllabus chapters 0620/32 Oct/Nov 2021 tested, by marks. Each chapter links to every past-paper question on it.

Chapter	Questions	Marks
Metals	1	15
Organic chemistry	1	14
Electrochemistry	1	10
Chemistry of the environment	1	9
Acids, bases and salts	1	8
Stoichiometry	1	8
The Periodic Table	1	8
Chemical reactions	1	8

Questions in 0620/32 Oct/Nov 2021

Question 1Acids, bases and salts · 8 marks
(a) A list of formulae is shown. CaCO3 CaO Cl 2 CH4 C2H5OH C2H6 CuSO4 H2 H2O MgO NaCl SO2 Answer the following questions using these formulae. Each formula may be used once, more than once or not at all. …
Question 2Stoichiometry · 8 marks
The table shows the masses of some of the ions in 1000 cm3 of water taken from a lake. name of ion formula of ion mass of ion in 1000 cm3 of lake water / mg calcium Ca2+ 0.41 chloride …
Question 3Metals · 15 marks
Iron is extracted from iron ore in a blast furnace. (a) Name an ore of iron. (b) (i) Complete the chemical equation for the reduction of iron(III) oxide in the blast furnace. Fe2O3 + CO → Fe + 3CO2 (ii) …
Question 4The Periodic Table · 8 marks
The table shows some properties of the Group I elements. element melting point / °C density in g / cm3 observations during reaction with water lithium 181 0.53 sodium 98 rapid bubbling no flame potassium 0.86 rapid bubbling lilac flame …
Question 5Organic chemistry · 14 marks
The table shows the structures of some organic compounds. compound structure of compound homologous series …
Question 6Electrochemistry · 10 marks
The diagrams show part of the structures of potassium iodide and bromine at room temperature and pressure. …
Question 7Chemistry of the environment · 9 marks
This question is about sulfur and compounds of sulfur. (a) Use the kinetic particle theory to describe the differences between sulfur gas and solid sulfur in terms of: ● the arrangement of the particles ● the separation of the particles. …
Question 8Chemical reactions · 8 marks
A student investigated the reaction of small pieces of calcium carbonate with dilute hydrochloric acid. The hydrochloric acid was in excess. CaCO3 + 2HCl → CaCl 2 + CO2 + H2O The rate of reaction is found by measuring the …

Other Chemistry papers from Oct/Nov 2021

Questions students ask

Where can I get the 0620/32 Oct/Nov 2021 mark scheme?

Open the mark scheme above - it is the official Cambridge scheme for this exact paper (0620_w21_ms_32), and on a wide screen it sits beside the question you are reading.

What was the grade threshold for an A in 0620/32 Oct/Nov 2021?

45 marks out of 80, a C needed 33.

Which topics came up in 0620/32 Oct/Nov 2021?

Mostly Metals, Organic chemistry, Electrochemistry. The full list is in the table above.

Do I need an account to open 0620/32 Oct/Nov 2021?

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.