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

Chemistry 0620/33 Oct/Nov 2023 past paper

Cambridge IGCSE Chemistry (0620) Paper 3 (Theory (Core)), variant 3, 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_33 · 0620_w23_ms_33

Grade thresholds for 0620/33 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 0620/33 Oct/Nov 2023 tested, by marks. Each chapter links to every past-paper question on it.

Chapter	Questions	Marks
Organic chemistry	3	25
Chemistry of the environment	2	21
Metals	1	13
Atoms, elements and compounds	1	12
Chemical reactions	1	9

Questions in 0620/33 Oct/Nov 2023

Question 1Organic chemistry · 6 marks
A list of substances is shown. ammonia calcium oxide carbon monoxide cobalt(II) chloride ethane ethanol ethene oxygen potassium oxide sodium sulfate sulfuric acid water Answer the following questions using only the substances from the list. Each substance may be used …
Question 2Organic chemistry · 6 marks
Hydrocarbons are compounds of carbon and hydrogen. (a) State the meaning of the term compound. (b) Fig. 2.1 shows a fractionating column for separating petroleum into different hydrocarbon fractions. lubricating oil bitumen refinery gas fraction gasoline naphtha kerosene B fuel …
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 carbon monoxide hydrocarbons oxides of nitrogen particulates sulfur dioxide …
Question 4Chemistry of the environment · 9 marks
Nitrogen is a gas at room temperature. (a) State two general properties of a gas. …
Question 5Metals · 13 marks
This question is about metals. (a) Table 5.1 shows some properties of the Group I metals. Table 5.1 metal melting point in °C boiling point in °C atomic volume in cm3 / mol observations on reaction with water lithium …
Question 6Chemical reactions · 9 marks
Hydrogen peroxide, H2O2, breaks down slowly at 40 °C to produce oxygen gas and water. …
Question 7Organic chemistry · 13 marks
Ethanoic acid and methacrylic acid are both carboxylic acids. (a) Complete the word equation for the reaction of ethanoic acid with calcium. ethanoic acid + calcium …
Question 8Atoms, elements and compounds · 12 marks
Potassium chloride is an ionic compound. (a) Complete Fig. 8.1 to show: ● the electronic configuration of a potassium ion ● the charge on the ion. K Fig. …

Other Chemistry papers from Oct/Nov 2023

Questions students ask

Where can I get the 0620/33 Oct/Nov 2023 mark scheme?

Open the mark scheme above - it is the official Cambridge scheme for this exact paper (0620_w23_ms_33), and on a wide screen it sits beside the question you are reading.

What was the grade threshold for an A in 0620/33 Oct/Nov 2023?

44 marks out of 80, a C needed 31.

Which topics came up in 0620/33 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 0620/33 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.