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2011

Cambridge O Level · 5070 · Paper 2 · Theory

Chemistry 5070/21 Oct/Nov 2011 past paper

Cambridge O Level Chemistry (5070) Paper 2 (Theory), variant 1, Oct/Nov 2011: the question paper and its official mark scheme, 9 questions worth 85 marks. Free to open, no account needed.

Questions
9
Marks
85
Open the question paperMark scheme

File names: 5070_w11_qp_21 · 5070_w11_ms_21

Topics in this paper

Which syllabus chapters 5070/21 Oct/Nov 2011 tested, by marks. Each chapter links to every past-paper question on it.

ChapterQuestionsMarks
Stoichiometry219
Experimental techniques and chemical analysis114
Acids, bases and salts110
Organic chemistry110
Metals110
Atoms, elements and compounds19
Chemical reactions18
Chemistry of the environment15

Questions in 5070/21 Oct/Nov 2011

  1. Question 1Chemistry of the environment · 5 marks

    A1 Choose from the following list of compounds to answer the questions below. calcium hydroxide carbon monoxide methane nitrogen dioxide potassium manganate(VII) silver nitrate sulfur dioxide Each compound can be used once, more than once, or not at all. Which …

  2. Question 2Stoichiometry · 9 marks

    For Examiner’s Use A2 Sodium can react with compounds called crown ethers. (a) A typical crown ether is shown below. …

  3. Question 3Chemical reactions · 8 marks

    For Examiner’s Use A3 Hydrogen peroxide is a colourless liquid. An aqueous solution of hydrogen peroxide reacts with the iodide ions in acidified potassium iodide to form water and iodine. H2O2(aq) + 2H+(aq) + 2I–(aq) 2H2O(l) + I2(aq) (a) (i) …

  4. Question 4Experimental techniques and chemical analysis · 14 marks

    For Examiner’s Use A4 A plant contains the coloured compounds chlorophyll and carotene. (a) The mixture of coloured compounds is extracted with propanone to give a brown solution. (i) Describe, with the aid of a labelled diagram, how you can …

  5. Question 5Atoms, elements and compounds · 9 marks

    For Examiner’s Use A5 Three types of bonding are covalent, ionic and metallic. (a) (i) Draw a labelled diagram to illustrate metallic bonding. (ii) Use ideas about the structure of metals to explain why metals are malleable, good conductors of …

  6. Question 6Acids, bases and salts · 10 marks

    B6 A student prepares some crystals of hydrated sodium sulfate by titrating aqueous sodium hydroxide with sulfuric acid. (a) Describe how he can obtain pure dry crystals of sodium sulfate using this method. (b) The student uses 25.0 cm3 of …

  7. Question 7Organic chemistry · 10 marks

    For Examiner’s Use B7 The structure of glycollic acid is shown below. …

  8. Question 8Metals · 10 marks

    For Examiner’s Use B8 Aluminium is extracted from bauxite ore. (a) One stage in purifying bauxite to obtain pure aluminium oxide involves mixing the crushed ore with concentrated aqueous sodium hydroxide. The products of the reaction are aqueous sodium aluminate, …

  9. Question 9Stoichiometry · 10 marks

    For Examiner’s Use B9 Hydrogen fluoride, hydrogen chloride and hydrogen iodide are all acidic gases. (a) A student makes hydrogen chloride by reacting sodium chloride with excess concentrated sulfuric acid at room temperature and pressure. NaCl + H2SO4 NaHSO4 + …

Other Chemistry papers from Oct/Nov 2011

Questions students ask

Where can I get the 5070/21 Oct/Nov 2011 mark scheme?
Open the mark scheme above - it is the official Cambridge scheme for this exact paper (5070_w11_ms_21), and on a wide screen it sits beside the question you are reading.
Which topics came up in 5070/21 Oct/Nov 2011?
Mostly Stoichiometry, Experimental techniques and chemical analysis, Acids, bases and salts. The full list is in the table above.
Do I need an account to open 5070/21 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.