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

Chemistry 0620/31 Oct/Nov 2019 past paper

Cambridge IGCSE Chemistry (0620) Paper 3 (Theory (Core)), variant 1, Oct/Nov 2019: the question paper and its official mark scheme, 7 questions worth 80 marks, with the grade thresholds. Free to open, no account needed.

Questions: 7
Marks: 80
Grade A from: 46

Open the question paper Mark scheme

File names: 0620_w19_qp_31 · 0620_w19_ms_31

Grade thresholds for 0620/31 Oct/Nov 2019

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
46	40	34	29	24

Topics in this paper

Which syllabus chapters 0620/31 Oct/Nov 2019 tested, by marks. Each chapter links to every past-paper question on it.

Chapter	Questions	Marks
Chemistry of the environment	2	18
Organic chemistry	1	14
Atoms, elements and compounds	1	13
The Periodic Table	1	13
States of matter	1	11
Electrochemistry	1	11

Questions in 0620/31 Oct/Nov 2019

Question 1States of matter · 11 marks
This question is about solids, liquids and gases. (a) The list gives the names of nine substances which are solids at room temperature. a ceramic aluminium anhydrous cobalt(II) chloride anhydrous copper(II) sulfate calcium oxide graphite iodine iron sodium Answer the …
Question 2Organic chemistry · 14 marks
Biogas is made by fermenting animal and vegetable waste. (a) The table shows the percentage composition of the gases present in a sample of biogas. substance present percentage present in biogas carbon dioxide 28.5 hydrogen 1.0 methane 62.0 nitrogen water …
Question 3Chemistry of the environment · 8 marks
A student investigated the reaction between zinc carbonate and an excess of dilute hydrochloric acid. ZnCO3 + 2HCl ZnCl 2 + CO2 + H2O The rate of reaction can be found by measuring the decrease in the mass of the …
Question 4Atoms, elements and compounds · 13 marks
An isotope of sodium is written as shown. 23Na …
Question 5The Periodic Table · 13 marks
This question is about the halogens and compounds of the halogens. (a) The properties of some halogens are shown in the table. element melting point in °C boiling point in °C density of liquid at its boiling point in g …
Question 6Chemistry of the environment · 10 marks
This question is about ammonia. (a) When ammonia gas reacts with hydrogen chloride gas, white fumes of ammonium chloride are formed. NH3 + HCl NH4Cl (i) What type of chemical reaction is this? Draw a circle around the correct answer. …
Question 7Electrochemistry · 11 marks
(a) Magnesium is manufactured by the electrolysis of molten magnesium chloride. (i) The negative electrode is made of iron. Suggest a non-metal which could be used for the positive electrode. Give a reason for your answer. (ii) Predict the products …

Other Chemistry papers from Oct/Nov 2019

Questions students ask

Where can I get the 0620/31 Oct/Nov 2019 mark scheme?

Open the mark scheme above - it is the official Cambridge scheme for this exact paper (0620_w19_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 2019?

46 marks out of 80, a C needed 34.

Which topics came up in 0620/31 Oct/Nov 2019?

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

Do I need an account to open 0620/31 Oct/Nov 2019?

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.