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

Chemistry 0620/31 Oct/Nov 2013 past paper

Cambridge IGCSE Chemistry (0620) Paper 3 (Theory (Extended)), variant 1, Oct/Nov 2013: 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: 43

Open the question paper Mark scheme

File names: 0620_w13_qp_31 · 0620_w13_ms_31

Grade thresholds for 0620/31 Oct/Nov 2013

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
43	0	22	0	16

Topics in this paper

Which syllabus chapters 0620/31 Oct/Nov 2013 tested, by marks. Each chapter links to every past-paper question on it.

Chapter	Questions	Marks
Chemistry of the environment	2	27
Organic chemistry	1	16
Chemical reactions	1	14
The Periodic Table	1	8
Chemical energetics	1	8
Electrochemistry	1	7

Questions in 0620/31 Oct/Nov 2013

Question 1Electrochemistry · 7 marks
For Examiner’s Use 1 For each of the following, name an element which matches the description. (a) It is used as a fuel in nuclear reactors. (b) It is the only non-metal which is a good conductor of electricity. (c) …
Question 2The Periodic Table · 8 marks
For Examiner’s Use 2 (a) Give three differences in physical properties between the Group I metal, potassium, and the transition element, iron. …
Question 3Chemical reactions · 14 marks
For Examiner’s Use 3 Ammonia is manufactured by the Haber process. …
Question 4Chemistry of the environment · 15 marks
For Examiner’s Use 4 20.0 g of small lumps of calcium carbonate and 40 cm3 of hydrochloric acid, concentration 2.0 mol / dm3, were placed in a ﬂ ask on a top pan balance. The mass of the ﬂ ask …
Question 5Organic chemistry · 16 marks
For Examiner’s Use 5 The alkenes are unsaturated hydrocarbons. They form a homologous series, the members of which have the same chemical properties. They undergo addition reactions and are easily oxidised. (a) The following hydrocarbons are isomers. CH3 CH3 CH2 …
Question 6Chemistry of the environment · 12 marks
For Examiner’s Use 6 Lead is an excellent rooﬁ ng material. It is malleable and resistant to corrosion. Lead rapidly becomes coated with basic lead carbonate which protects it from further corrosion. (a) Lead has a typical metallic structure which …
Question 7Chemical energetics · 8 marks
For Examiner’s Use 7 (a) The following are two examples of substitution reactions. Only the reaction involving chlorine is a photochemical reaction. CH4 + Cl 2  CH3Cl + HCl CH4 + Br2  CH3Br + HBr (i) Explain the …

Other Chemistry papers from Oct/Nov 2013

Questions students ask

Where can I get the 0620/31 Oct/Nov 2013 mark scheme?

Open the mark scheme above - it is the official Cambridge scheme for this exact paper (0620_w13_ms_31), and on a wide screen it sits beside the question you are reading.

What was the grade threshold for an A in 0620/31 Oct/Nov 2013?

43 marks out of 80, a C needed 22.

Which topics came up in 0620/31 Oct/Nov 2013?

Mostly Chemistry of the environment, Organic chemistry, Chemical reactions. The full list is in the table above.

Do I need an account to open 0620/31 Oct/Nov 2013?

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.