Cambridge IGCSE · 0620 · Paper 2 · Theory (Core)

Chemistry 0620/21 Oct/Nov 2011 past paper

Cambridge IGCSE Chemistry (0620) Paper 2 (Theory (Core)), variant 1, Oct/Nov 2011: 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

Open the question paper Mark scheme

File names: 0620_w11_qp_21 · 0620_w11_ms_21

Grade thresholds for 0620/21 Oct/Nov 2011

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
0	0	51	0	38

Topics in this paper

Which syllabus chapters 0620/21 Oct/Nov 2011 tested, by marks. Each chapter links to every past-paper question on it.

Chapter	Questions	Marks
Chemistry of the environment	2	21
The Periodic Table	1	14
Metals	1	11
Acids, bases and salts	1	11
Organic chemistry	1	9
Experimental techniques and chemical analysis	1	7
Electrochemistry	1	7

Questions in 0620/21 Oct/Nov 2011

Question 1Experimental techniques and chemical analysis · 7 marks
For Examiner’s Use 1 Chromatography can be used to test for the purity of substances. (a) (i) Describe one area in everyday life where purity of substances is important. (ii) Mineral water contains dissolved salts such as magnesium chloride. Which …
Question 2Metals · 11 marks
For Examiner’s Use 2 A student set up an experiment to demonstrate rusting as shown below. He made observations at the start of the experiment, after 2 weeks and after 4 weeks. measuring cylinder air water 10 cm3 8 cm3 …
Question 3The Periodic Table · 14 marks
For Examiner’s Use 3 The diagram shows some of the elements in Period 3 of the Periodic Table. Na Mg Si P S Cl Ar (a) From the diagram, choose (i) one element which forms a basic oxide. (ii) two …
Question 4Organic chemistry · 9 marks
For Examiner’s Use 4 Ethane is a saturated hydrocarbon. Ethene is an unsaturated hydrocarbon. (a) Describe how you can distinguish between ethane and ethene using aqueous bromine. (b) The diagram shows the apparatus used to crack long chain alkanes into …
Question 5Chemistry of the environment · 12 marks
For Examiner’s Use 5 A pupil studied the effect of temperature on the speed of reaction of aqueous sodium thiosulfate with dilute hydrochloric acid. When he added hydrochloric acid to a solution of sodium thiosulfate, a precipitate of sulfur gradually …
Question 6Chemistry of the environment · 9 marks
For Examiner’s Use 6 The diagram shows the ﬂ ame from a Bunsen burner when its air hole is open. outer zone middle zone inner cone (a) In the outer zone of the ﬂ ame, methane undergoes complete combustion. Complete …
Question 7Acids, bases and salts · 11 marks
For Examiner’s Use 7 A student studied the reaction of citric acid with sodium hydrogen carbonate. She put a solution of citric acid in a plastic cup and measured its temperature. She then added sodium hydrogen carbonate powder and measured …
Question 8Electrochemistry · 7 marks
For Examiner’s Use 8 The diagram shows an electrolysis cell for extracting sodium from molten sodium chloride. …

Other Chemistry papers from Oct/Nov 2011

Questions students ask

Where can I get the 0620/21 Oct/Nov 2011 mark scheme?

Open the mark scheme above - it is the official Cambridge scheme for this exact paper (0620_w11_ms_21), and on a wide screen it sits beside the question you are reading.

Which topics came up in 0620/21 Oct/Nov 2011?

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

Do I need an account to open 0620/21 Oct/Nov 2011?

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.