Cambridge O Level · 5070 · Paper 2 · Theory

Chemistry 5070/21 Oct/Nov 2019 past paper

Cambridge O Level Chemistry (5070) Paper 2 (Theory), variant 1, Oct/Nov 2019: the question paper and its official mark scheme, 9 questions worth 85 marks, with the grade thresholds. Free to open, no account needed.

Questions: 9
Marks: 75
Grade A from: 57

Open the question paper Mark scheme

File names: 5070_w19_qp_21 · 5070_w19_ms_21

Grade thresholds for 5070/21 Oct/Nov 2019

The minimum raw marks Cambridge set for each grade on this component (out of 75). Thresholds change every session and variant, so always compare your score with the paper you actually sat.

A	B	C	D	E
57	44	30	26	21

Topics in this paper

Which syllabus chapters 5070/21 Oct/Nov 2019 tested, by marks. Each chapter links to every past-paper question on it.

Chapter	Questions	Marks
Atoms, elements and compounds	2	23
Chemical reactions	1	13
Acids, bases and salts	1	10
Chemical energetics	1	10
Organic chemistry	1	10
States of matter	1	8
Stoichiometry	1	6
The Periodic Table	1	5

Questions in 5070/21 Oct/Nov 2019

Question 1The Periodic Table · 5 marks
The diagram shows part of the Periodic Table. B C Mg Al Si P V Fe Cu Zn Answer the questions using only the elements shown in the diagram. Each element may be used once, more than once or not …
Question 2Atoms, elements and compounds · 13 marks
Sodium is a metal. (a) State two physical properties of sodium which are different from most other metals. …
Question 3Stoichiometry · 6 marks
Water can be removed from aqueous copper(II) sulfate by distillation. (a) Describe how and explain why water can be separated from aqueous copper(II) sulfate by distillation. In your answer include a description of distillation. You may draw a labelled diagram. …
Question 4Chemical reactions · 13 marks
This question is about compounds containing chlorine. (a) The equation shows the reaction of aqueous methanol with hydrochloric acid. CH3OH(aq) + HCl (aq) CH3Cl …
Question 5States of matter · 8 marks
The table shows some properties of four Group VII elements. element melting point in °C boiling point in °C density of liquid at boiling point in g / cm3 colour chlorine −101 −35 light green bromine −7 3.12 red-brown iodine …
Question 6Acids, bases and salts · 10 marks
Ethanoic acid, CH3COOH, is a weak acid. (a) What is the meaning of the term weak when applied to acids? (b) Ethanoic acid is solid at 16.0 °C. Describe the arrangement and movement of the particles in a solid. arrangement …
Question 7Chemical energetics · 10 marks
Hydrogen can be produced when steam and carbon monoxide are passed over a catalyst. H2O(g) + CO(g) CO2(g) …
Question 8Atoms, elements and compounds · 10 marks
Silicon is an element in Group IV of the Periodic Table. (a) One of the isotopes of silicon is: 30 14Si Deduce the number of electrons, neutrons and protons in one atom of this isotope of silicon. number of electrons …
Question 9Organic chemistry · 10 marks
This question is about polymers. (a) Polyesters and polyamides are both polymers formed by condensation reactions. What is meant by the term condensation reaction? (b) The partial structure of a polyester is shown. …

Other Chemistry papers from Oct/Nov 2019

Questions students ask

Where can I get the 5070/21 Oct/Nov 2019 mark scheme?

Open the mark scheme above - it is the official Cambridge scheme for this exact paper (5070_w19_ms_21), and on a wide screen it sits beside the question you are reading.

What was the grade threshold for an A in 5070/21 Oct/Nov 2019?

57 marks out of 75, a C needed 30.

Which topics came up in 5070/21 Oct/Nov 2019?

Mostly Atoms, elements and compounds, Chemical reactions, Acids, bases and salts. The full list is in the table above.

Do I need an account to open 5070/21 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.