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

Chemistry 0620/31 Oct/Nov 2023 past paper

Cambridge IGCSE Chemistry (0620) Paper 3 (Theory (Core)), variant 1, Oct/Nov 2023: 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: 44

Open the question paper Mark scheme

File names: 0620_w23_qp_31 · 0620_w23_ms_31

Grade thresholds for 0620/31 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
44	37	31	24	18

Topics in this paper

Which syllabus chapters 0620/31 Oct/Nov 2023 tested, by marks. Each chapter links to every past-paper question on it.

Chapter	Questions	Marks
Organic chemistry	2	19
Chemistry of the environment	2	18
Metals	1	13
Atoms, elements and compounds	1	12
States of matter	1	9
Chemical reactions	1	9

Questions in 0620/31 Oct/Nov 2023

Question 1Chemistry of the environment · 6 marks
A list of substances is shown. ammonium nitrate carbon monoxide copper(II) chloride ethane ethene litmus methane methyl orange sodium chloride sodium sulfate sulfur dioxide thymolphthalein Answer the following questions using only the substances from the list. Each substance may be …
Question 2Organic chemistry · 6 marks
(a) Fig. 2.1 shows the distillation apparatus that can be used to separate water from aqueous copper(II) sulfate. thermometer distillation flask aqueous copper(II) sulfate condenser water heat Fig. 2.1 Explain how distillation separates water from aqueous copper(II) sulfate. (b) Fig. …
Question 3Chemistry of the environment · 12 marks
(a) Table 3.1 shows the average concentrations, in ng / 1000 cm3, of air pollutants in four different years. Table 3.1 year concentration of air pollutant in ng / 1000 cm3 ammonia hydrocarbons oxides of nitrogen particulates sulfur dioxide …
Question 4States of matter · 9 marks
Bromine is a liquid at room temperature. (a) State two general properties of a liquid. …
Question 5Metals · 13 marks
This question is about metals and metal compounds. (a) Table 5.1 shows some properties of some Group I metals. Table 5.1 metal melting point in °C boiling point in °C observations on reaction with water solubility of metal hydroxide in …
Question 6Chemical reactions · 9 marks
A student investigates the reaction of large pieces of magnesium carbonate with dilute hydrochloric acid at 20 °C. The magnesium carbonate is in excess. (a) Fig. 6.1 shows the volume of carbon dioxide gas released as the reaction proceeds. …
Question 7Organic chemistry · 13 marks
(a) Fig. 7.1 shows the displayed formula of compound …
Question 8Atoms, elements and compounds · 12 marks
Lithium bromide is a compound with ionic bonding. (a) State the meaning of the term ionic bond. (b) Complete Fig. 8.1 to show: ● the electronic configuration of a lithium ion ● the charge on the ion. Li Fig. …

Other Chemistry papers from Oct/Nov 2023

Questions students ask

Where can I get the 0620/31 Oct/Nov 2023 mark scheme?

Open the mark scheme above - it is the official Cambridge scheme for this exact paper (0620_w23_ms_31), and on a wide screen it sits beside the question you are reading.

What was the grade threshold for an A in 0620/31 Oct/Nov 2023?

44 marks out of 80, a C needed 31.

Which topics came up in 0620/31 Oct/Nov 2023?

Mostly Organic chemistry, Chemistry of the environment, Metals. The full list is in the table above.

Do I need an account to open 0620/31 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.