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

Chemistry 0620/42 May/June 2019 past paper

Cambridge IGCSE Chemistry (0620) Paper 4 (Theory (Extended)), variant 2, May/June 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: 52

Open the question paper Mark scheme

File names: 0620_s19_qp_42 · 0620_s19_ms_42

Grade thresholds for 0620/42 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	F	G
52	41	28	24	19	14	9

Topics in this paper

Which syllabus chapters 0620/42 May/June 2019 tested, by marks. Each chapter links to every past-paper question on it.

Chapter	Questions	Marks
Organic chemistry	2	31
Acids, bases and salts	2	19
Metals	1	13
Atoms, elements and compounds	1	9
The Periodic Table	1	8

Questions in 0620/42 May/June 2019

Question 1Acids, bases and salts · 6 marks
The names of eight substances are given. aluminium oxide calcium oxide ethanol nitrogen iron(III) oxide methane oxygen silicon(IV) oxide Answer the following questions about these substances. Each substance may be used once, more than once or not at all. State …
Question 2Atoms, elements and compounds · 9 marks
(a) 22Na 11 , 23Na 11 and 24Na 11 are isotopes of sodium. (i) Describe how these sodium isotopes are the same and how they are different in terms of the total number of protons, neutrons and electrons in each. …
Question 3Acids, bases and salts · 13 marks
This question is about phosphorus and compounds of phosphorus. (a) Phosphorus has the formula P4. Some properties of P4 are shown. melting point …
Question 4Organic chemistry · 17 marks
Methanol is made industrially by reacting carbon monoxide with hydrogen. The gases react at a temperature of 250 °C and a pressure of 75 atmospheres. CO(g) + 2H2(g) CH3OH(g) The forward reaction is exothermic. (a) Suggest a source of hydrogen …
Question 5Organic chemistry · 14 marks
Copper(II) sulfate crystals, CuSO4.5H2O, are hydrated. Copper(II) sulfate crystals are made by reacting copper(II) carbonate with dilute sulfuric acid. The equation for the overall process is shown. CuCO3 + H2SO4 + 4H2O CuSO4.5H2O + CO2 step 1 Powdered solid copper(II) …
Question 6The Periodic Table · 8 marks
The halogens are the elements in Group VII of the Periodic Table. (a) Predict the physical state and colour of astatine at room temperature and pressure. physical state colour (b) When chlorine reacts with aqueous potassium bromide a displacement …
Question 7Metals · 13 marks
(a) Displacement reactions occur between metals and metal ions. Displacement reactions can be used to determine the order of reactivity of metals such as lead (Pb), nickel (Ni), and silver (Ag). The ionic equation for a displacement reaction is shown. …

Other Chemistry papers from May/June 2019

Questions students ask

Where can I get the 0620/42 May/June 2019 mark scheme?

Open the mark scheme above - it is the official Cambridge scheme for this exact paper (0620_s19_ms_42), and on a wide screen it sits beside the question you are reading.

What was the grade threshold for an A in 0620/42 May/June 2019?

52 marks out of 80, a C needed 28.

Which topics came up in 0620/42 May/June 2019?

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

Do I need an account to open 0620/42 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.