PrepWithTee owl logo PrepWithTee
2011

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

Chemistry 0620/31 Oct/Nov 2011 past paper

Cambridge IGCSE Chemistry (0620) Paper 3 (Theory (Extended)), variant 1, Oct/Nov 2011: 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
39
Open the question paperMark scheme

File names: 0620_w11_qp_31 · 0620_w11_ms_31

Grade thresholds for 0620/31 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.

ABCDE
39022016

Topics in this paper

Which syllabus chapters 0620/31 Oct/Nov 2011 tested, by marks. Each chapter links to every past-paper question on it.

ChapterQuestionsMarks
Chemical reactions224
Electrochemistry113
Stoichiometry113
Acids, bases and salts112
Organic chemistry110
Chemistry of the environment18

Questions in 0620/31 Oct/Nov 2011

  1. Question 1Acids, bases and salts · 12 marks

    For Examiner’s Use 1 This question is concerned with the following oxides. sulfur dioxide carbon monoxide lithium oxide aluminium oxide nitrogen dioxide strontium oxide (a) (i) Which of the above oxides will react with hydrochloric acid but not with aqueous …

  2. Question 2Chemistry of the environment · 8 marks

    For Examiner’s Use 2 Two important greenhouse gases are methane and carbon dioxide. (a) Methane is twenty times more effective as a greenhouse gas than carbon dioxide. The methane in the atmosphere comes from both natural and industrial sources. (i) …

  3. Question 3Electrochemistry · 13 marks

    For Examiner’s Use 3 Aluminium is extracted by the electrolysis of a molten mixture of alumina, which is aluminium oxide, and cryolite. carbon cathode (–) carbon anode (+) mixture of aluminium oxide and cryolite aluminium at cathode 900 °C waste …

  4. Question 4Chemical reactions · 11 marks

    For Examiner’s Use 4 Reversible reactions can come to equilibrium. The following are three examples of types of gaseous equilibria. …

  5. Question 5Chemical reactions · 13 marks

    For Examiner’s Use 5 The rate of the reaction between iron and aqueous bromine can be investigated using the apparatus shown below. piece of metal (iron) solution of bromine attached to stirrer piece of metal rotates (a) A piece of …

  6. Question 6Organic chemistry · 10 marks

    For Examiner’s Use 6 Structural formulae are an essential part of Organic Chemistry. (a) Draw the structural formula of each of the following. Show all the bonds in the structure. (i) ethanoic acid (ii) ethanol (b) (i) Ethanoic acid and …

  7. Question 7Stoichiometry · 13 marks

    For Examiner’s Use 7 Some hydroxides, nitrates and carbonates decompose when heated. (a) (i) Name a metal hydroxide which does not decompose when heated. (ii) Write the equation for the thermal decomposition of copper(II) hydroxide. (iii) Suggest why these two …

Other Chemistry papers from Oct/Nov 2011

Questions students ask

Where can I get the 0620/31 Oct/Nov 2011 mark scheme?
Open the mark scheme above - it is the official Cambridge scheme for this exact paper (0620_w11_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 2011?
39 marks out of 80, a C needed 22.
Which topics came up in 0620/31 Oct/Nov 2011?
Mostly Chemical reactions, Electrochemistry, Stoichiometry. The full list is in the table above.
Do I need an account to open 0620/31 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.