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

Chemistry 0620/31 May/June 2019 past paper

Cambridge IGCSE Chemistry (0620) Paper 3 (Theory (Core)), variant 1, May/June 2019: 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_s19_qp_31 · 0620_s19_ms_31

Grade thresholds for 0620/31 May/June 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
44	36	29	21	12

Topics in this paper

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

Chapter	Questions	Marks
Chemistry of the environment	2	20
States of matter	1	14
Stoichiometry	1	13
Metals	1	11
Atoms, elements and compounds	1	8
The Periodic Table	1	7
Chemical reactions	1	7

Questions in 0620/31 May/June 2019

Question 1Atoms, elements and compounds · 8 marks
The diagrams show part of the structures of five substances, …
Question 2Metals · 11 marks
This question is about iron and iron compounds. (a) Name the main ore of iron. (b) In a blast furnace used for the extraction of iron, carbon reacts with oxygen from the air to form carbon monoxide. Complete the chemical …
Question 3The Periodic Table · 7 marks
(a) The table shows the percentage by mass of the elements on Earth and in the Universe. element percentage by mass on Earth percentage by mass in the Universe helium 0.0 21.0 hydrogen 0.1 76.0 iron 35.0 1.0 magnesium 14.0 …
Question 4States of matter · 14 marks
This question is about iodine and compounds of iodine. (a) Use the kinetic particle model to describe the separation between the molecules and the type of motion of the molecules in: ● ● solid iodine ● ● iodine gas. …
Question 5Chemistry of the environment · 11 marks
Coal gas is made by heating coal in the absence of air. The list shows the main gases present in coal gas. carbon dioxide carbon monoxide ethene hydrogen methane nitrogen (a) (i) Which one of these gases is an alkane? …
Question 6Stoichiometry · 13 marks
This question is about copper and copper compounds. (a) Describe how you could prepare a pure sample of crystals of hydrated copper(II) sulfate using dilute sulfuric acid and an excess of copper(II) oxide. (b) Anhydrous copper(II) sulfate is used to …
Question 7Chemical reactions · 7 marks
A student investigates the rate of reaction of small pieces of calcium carbonate with an excess of hydrochloric acid of concentration 1 mol / dm3. CaCO3(s) + 2HCl (aq) CaCl 2(aq) + CO2(g) …
Question 8Chemistry of the environment · 9 marks
(a) Sulfur dioxide is a pollutant in the air. (i) State one source of sulfur dioxide in the air. (ii) Sulfur dioxide is oxidised to sulfur trioxide in the air. Oxides of nitrogen act as catalysts for this reaction. What …

Other Chemistry papers from May/June 2019

Questions students ask

Where can I get the 0620/31 May/June 2019 mark scheme?

Open the mark scheme above - it is the official Cambridge scheme for this exact paper (0620_s19_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 May/June 2019?

44 marks out of 80, a C needed 29.

Which topics came up in 0620/31 May/June 2019?

Mostly Chemistry of the environment, States of matter, Stoichiometry. The full list is in the table above.

Do I need an account to open 0620/31 May/June 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.