Cambridge IGCSE · 0620 · Paper 4 · Theory (Extended)

Chemistry 0620/43 Oct/Nov 2019 past paper

Cambridge IGCSE Chemistry (0620) Paper 4 (Theory (Extended)), variant 3, 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: 51

Open the question paper Mark scheme

File names: 0620_w19_qp_43 · 0620_w19_ms_43

Grade thresholds for 0620/43 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	F	G
51	41	31	27	23	19	15

Topics in this paper

Which syllabus chapters 0620/43 Oct/Nov 2019 tested, by marks. Each chapter links to every past-paper question on it.

Chapter	Questions	Marks
Stoichiometry	2	23
Electrochemistry	1	14
Organic chemistry	1	14
States of matter	1	12
Acids, bases and salts	1	9
Atoms, elements and compounds	1	8

Questions in 0620/43 Oct/Nov 2019

Question 1Atoms, elements and compounds · 8 marks
(a) Atoms are made of smaller particles called electrons, neutrons and protons. Complete the table. particle relative charge relative mass electron 1 1840 neutron proton …
Question 2States of matter · 12 marks
The table shows the melting points, boiling points and electrical conductivities of six substances …
Question 3Electrochemistry · 14 marks
(a) Name the ore of aluminium which mainly consists of aluminium oxide. (b) Aluminium is produced by the electrolysis of aluminium oxide dissolved in molten cryolite. negative electrode positive electrode molten mixture of aluminium oxide and cryolite aluminium waste gases …
Question 4Stoichiometry · 19 marks
This question is about phosphorus and compounds of phosphorus. (a) A phosphorus molecule contains four phosphorus atoms only. What is the formula of a phosphorus molecule? (b) Phosphorus reacts with chlorine gas to produce phosphorus(III) chloride, PCl 3. (i) Write …
Question 5Stoichiometry · 4 marks
Nitrates such as ammonium nitrate are used as fertilisers. The final stage in the production of ammonium nitrate is shown in the equation. Ca(NO3)2 + 2NH3 + CO2 + H2O 2NH4NO3 + CaCO3 Calculate the maximum mass of ammonium nitrate …
Question 6Acids, bases and salts · 9 marks
This question is about sulfuric acid and substances that can be made from sulfuric acid. (a) Sulfuric acid is a strong acid. What is meant by the term strong acid ? strong acid (b) Dilute sulfuric acid and aqueous …
Question 7Organic chemistry · 14 marks
Addition polymerisation and condensation polymerisation are two types of polymerisation. (a) Which functional group is present in all the monomers which are used to make addition polymers? (b) Part of an addition polymer is shown. C CH3 H C CH3 …

Other Chemistry papers from Oct/Nov 2019

Questions students ask

Where can I get the 0620/43 Oct/Nov 2019 mark scheme?

Open the mark scheme above - it is the official Cambridge scheme for this exact paper (0620_w19_ms_43), and on a wide screen it sits beside the question you are reading.

What was the grade threshold for an A in 0620/43 Oct/Nov 2019?

51 marks out of 80, a C needed 31.

Which topics came up in 0620/43 Oct/Nov 2019?

Mostly Stoichiometry, Electrochemistry, Organic chemistry. The full list is in the table above.

Do I need an account to open 0620/43 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.