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

Chemistry 0620/33 Oct/Nov 2019 past paper

Cambridge IGCSE Chemistry (0620) Paper 3 (Theory (Core)), variant 3, Oct/Nov 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: 52

Open the question paper Mark scheme

File names: 0620_w19_qp_33 · 0620_w19_ms_33

Grade thresholds for 0620/33 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
52	45	37	30	22

Topics in this paper

Which syllabus chapters 0620/33 Oct/Nov 2019 tested, by marks. Each chapter links to every past-paper question on it.

Chapter	Questions	Marks
Acids, bases and salts	2	20
Organic chemistry	1	15
The Periodic Table	1	12
Chemistry of the environment	1	11
Atoms, elements and compounds	1	11
Chemical reactions	1	6
Stoichiometry	1	5

Questions in 0620/33 Oct/Nov 2019

Question 1Chemistry of the environment · 11 marks
This question is about solids and gases. (a) The list gives the names of eight substances which are gases at room temperature. ammonia butane carbon dioxide carbon monoxide chlorine methane propene sulfur dioxide Answer the following questions about these gases. …
Question 2Organic chemistry · 15 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 36.8 hydrogen 0.6 methane 54.5 nitrogen 6.5 …
Question 3Chemical reactions · 6 marks
A student investigated the reaction of magnesium carbonate with an excess of dilute hydrochloric acid. MgCO3 + 2HCl MgCl 2 + CO2 + H2O The rate of reaction can be found by measuring the decrease in the mass of the …
Question 4Atoms, elements and compounds · 11 marks
This question is about sulfur and compounds of sulfur. An isotope of sulfur is written as shown. …
Question 5The Periodic Table · 12 marks
This question is about Group I elements. (a) The properties of some Group I elements are shown in the table. element melting point in °C boiling point in °C relative thermal conductivity atomic radius / pm lithium …
Question 6Acids, bases and salts · 13 marks
Sodium hydroxide and ammonia are both bases. They both turn red litmus blue. (a) The chemical equation shows a reaction that produces sodium hydroxide. Na2CO3 + Ca(OH)2 2NaOH + CaCO3 Complete the word equation for this reaction. + sodium hydroxide …
Question 7Acids, bases and salts · 7 marks
Aluminium is manufactured by the electrolysis of molten aluminium oxide. (a) Predict the products of the electrolysis of molten aluminium oxide at: the positive electrode the negative electrode. (b) Complete these sentences about the uses of aluminium using words …
Question 8Stoichiometry · 5 marks
This question is about dyes. (a) Chromatography can be used to separate a mixture of dyes. …

Other Chemistry papers from Oct/Nov 2019

Questions students ask

Where can I get the 0620/33 Oct/Nov 2019 mark scheme?

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

52 marks out of 80, a C needed 37.

Which topics came up in 0620/33 Oct/Nov 2019?

Mostly Acids, bases and salts, Organic chemistry, The Periodic Table. The full list is in the table above.

Do I need an account to open 0620/33 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.