Cambridge O Level · 5070 · Paper 2 · Theory

Chemistry 5070/21 Oct/Nov 2014 past paper

Cambridge O Level Chemistry (5070) Paper 2 (Theory), variant 1, Oct/Nov 2014: 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: 42

Open the question paper Mark scheme

File names: 5070_w14_qp_21 · 5070_w14_ms_21

Grade thresholds for 5070/21 Oct/Nov 2014

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
42	30	21	16	11

Topics in this paper

Which syllabus chapters 5070/21 Oct/Nov 2014 tested, by marks. Each chapter links to every past-paper question on it.

Chapter	Questions	Marks
Stoichiometry	2	20
Chemistry of the environment	2	20
The Periodic Table	1	10
Atoms, elements and compounds	1	9
Experimental techniques and chemical analysis	1	9
Metals	1	9
Acids, bases and salts	1	8

Questions in 5070/21 Oct/Nov 2014

Question 1Atoms, elements and compounds · 9 marks
A1 The diagram shows part of the Periodic Table. Only some of the elements are shown. …
Question 2The Periodic Table · 10 marks
A2 The table shows some properties of the Group 0 elements (noble gases). element density of liquid element in g / cm3 boiling point / °C helium 0.15 –269 neon 1.20 –246 argon 1.40 –186 krypton –152 xenon 3.52 (a) …
Question 3Experimental techniques and chemical analysis · 9 marks
A3 Paper chromatography can be used to separate metal ions in a mixture and identify them by comparison with known samples of metal ions (A–E). (a) Draw a labelled diagram to show the apparatus used in paper chromatography. On your …
Question 4Metals · 9 marks
A4 The diagram shows a simple electrochemical cell. negative electrode positive electrode dilute sulfuric acid V The voltages produced by different combinations of metal electrodes are shown in the table below. The more reactive metal is always the negative electrode. …
Question 5Acids, bases and salts · 8 marks
A5 A student titrates 20.0 cm3 of a metal hydroxide, M(OH)2, of concentration 0.060 mol / dm3 with a strong acid of concentration 0.050 mol / dm3. It requires 24.0 cm3 of acid to neutralise the metal hydroxide. (a) (i) …
Question 6Stoichiometry · 10 marks
B6 Parts of the structures of silicon dioxide and poly(ethene) are shown below. oxygen atom silicon atom …
Question 7Chemistry of the environment · 10 marks
B7 Three important processes in the carbon cycle are combustion, respiration and photosynthesis. (a) Construct the equation for the complete combustion of propane, …
Question 8Chemistry of the environment · 10 marks
B8 Sulfuric acid is manufactured by the Contact process. (a) In some chemical plants zinc sulfide, ZnS, is roasted in air to form zinc oxide and sulfur dioxide. Construct the balanced equation for this reaction. (b) The sulfur dioxide is …
Question 9Stoichiometry · 10 marks
B9 Bromate(V) ions, BrO3 –, react with bromide ions, Br–, in acidic solution to form bromine. BrO3 –(aq) + 5Br–(aq) + 6H+(aq) 3Br2(aq) …

Other Chemistry papers from Oct/Nov 2014

Questions students ask

Where can I get the 5070/21 Oct/Nov 2014 mark scheme?

Open the mark scheme above - it is the official Cambridge scheme for this exact paper (5070_w14_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 2014?

42 marks out of 75, a C needed 21.

Which topics came up in 5070/21 Oct/Nov 2014?

Mostly Stoichiometry, Chemistry of the environment, The Periodic Table. The full list is in the table above.

Do I need an account to open 5070/21 Oct/Nov 2014?

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.