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

Chemistry 0620/31 May/June 2018 past paper

Cambridge IGCSE Chemistry (0620) Paper 3 (Theory (Core)), variant 1, May/June 2018: 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: 49

Open the question paper Mark scheme

File names: 0620_s18_qp_31 · 0620_s18_ms_31

Grade thresholds for 0620/31 May/June 2018

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
49	41	33	24	16

Topics in this paper

Which syllabus chapters 0620/31 May/June 2018 tested, by marks. Each chapter links to every past-paper question on it.

Chapter	Questions	Marks
Chemistry of the environment	2	20
Acids, bases and salts	2	19
Electrochemistry	1	11
States of matter	1	10
Atoms, elements and compounds	1	10
The Periodic Table	1	10

Questions in 0620/31 May/June 2018

Question 1Chemistry of the environment · 10 marks
The names of eight gases are given. ammonia argon carbon dioxide helium hydrogen methane neon sulfur dioxide (a) Answer the following questions about these gases. Each gas may be used once, more than once or not at all. State which …
Question 2Chemistry of the environment · 10 marks
The table shows the percentage by volume of each of the gases present in the exhaust gases from a petrol engine. name percentage by volume carbon monoxide 1.0 carbon dioxide hydrogen 0.2 nitrogen 77.0 nitrogen dioxide 0.3 oxygen 0.7 hydrocarbons …
Question 3States of matter · 10 marks
Limonene is a volatile liquid which smells of oranges. (a) A teacher placed a beaker of limonene at the front of a classroom. At first, the students at the back of the classroom could not smell the limonene. After two …
Question 4Acids, bases and salts · 13 marks
This question is about iron and its compounds. (a) The table shows how easy it is to reduce four metal oxides by heating with carbon. metal oxide ease of reduction with carbon chromium(III) oxide only reduced above 1700 °C iron(III) …
Question 5Electrochemistry · 11 marks
(a) Complete the sentence about electrolysis using words from the list. breakdown compound electricity electroplating element gaseous heat molten Electrolysis is the of an ionic when or in aqueous solution by the passage of …
Question 6Atoms, elements and compounds · 10 marks
This question is about isotopes. (a) An atom of an isotope of fluorine is represented by the symbol shown. 19F 9 Describe the structure of an atom of this isotope of fluorine. In your answer, include: ● ● the position …
Question 7The Periodic Table · 10 marks
This question is about Group I elements and their compounds. (a) The properties of some Group I elements are shown in the table. element boiling point / °C atomic radius / pm relative thermal conductivity observations when it reacts with …
Question 8Acids, bases and salts · 6 marks
When zinc reacts with hydrochloric acid, hydrogen gas is produced. The graph shows how the volume of hydrogen gas produced changes with time when an excess of zinc is reacted with 0.2 mol / dm3 hydrochloric acid. …

Other Chemistry papers from May/June 2018

Questions students ask

Where can I get the 0620/31 May/June 2018 mark scheme?

Open the mark scheme above - it is the official Cambridge scheme for this exact paper (0620_s18_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 2018?

49 marks out of 80, a C needed 33.

Which topics came up in 0620/31 May/June 2018?

Mostly Chemistry of the environment, Acids, bases and salts, Electrochemistry. The full list is in the table above.

Do I need an account to open 0620/31 May/June 2018?

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.