Cambridge O Level · 5070 · Paper 2 · Theory
Chemistry 5070/21 May/June 2013 past paper
Cambridge O Level Chemistry (5070) Paper 2 (Theory), variant 1, May/June 2013: the question paper and its official mark scheme, 10 questions worth 85 marks. Free to open, no account needed.
- Questions
- 10
- Marks
- 85
File names: 5070_s13_qp_21 · 5070_s13_ms_21
Topics in this paper
Which syllabus chapters 5070/21 May/June 2013 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 5070/21 May/June 2013
- Question 1
A1 Choose from the following compounds to answer the questions below. butane calcium carbonate carbon dioxide copper(II) nitrate iron(II) hydroxide iron(III) hydroxide propene sodium chloride sulfur dioxide sulfuric acid Each compound can be used once, more than once or not …
- Question 2
For Examiner’s Use A2 Photosynthesis helps to maintain the percentage of oxygen in air. (a) What is the percentage, by volume, of oxygen in dry air? (b) In addition to releasing oxygen, photosynthesis produces glucose, C6H12O6. Write the overall equation …
- Question 3
For Examiner’s Use A3 Salts are often made by the neutralisation of bases. (a) Aqueous potassium hydroxide, of concentration 0.150 mol / dm3, is added to 25.0 cm3 of sulfuric acid in a flask. The graph shows how the pH …
- Question 4
For Examiner’s Use A4 The table shows the number of electrons, neutrons and protons in seven different particles. particle number of electrons neutrons protons …
- Question 5
For Examiner’s Use A5 Analysis of compound X shows it has the following composition. element percentage by mass nitrogen 11.1 hydrogen 3.20 chromium 41.3 oxygen 44.4 (a) Show that X has the formula N2H8Cr2O7. (b) An aqueous solution of X …
- Question 6
For Examiner’s Use A6 Potassium is in Group I and chlorine is in Group VII of the Periodic Table. Potassium forms an oxide with the formula K2O and chlorine forms an oxide with the formula Cl2O. (a) (i) Draw a …
- Question 7
B7 Malachite is an ore of copper. The formula of malachite is CuCO3.Cu(OH)2. Malachite reacts as though it is a mixture of copper(II) carbonate and copper(II) hydroxide. A small sample of malachite is added to excess dilute hydrochloric acid, HCl(aq). …
- Question 8
For Examiner’s Use B8 Carboxylic acids are a homologous series of organic compounds. The table shows information about some carboxylic acids. carboxylic acid formula melting point / °C boiling point / °C methanoic acid HCO2H 8 100 ethanoic acid CH3CO2H …
- Question 9
For Examiner’s Use B9 Ethanol is manufactured by the hydration of ethene. …
- Question 10
For Examiner’s Use B10 Aqueous silver nitrate can be electrolysed using inert electrodes. Solid silver is formed on the cathode (negative electrode). The table shows how the mass of silver formed is affected by four factors. temperature of solution / …
Other Chemistry papers from May/June 2013
- 5070/11 Multiple choice
- 5070/12 Multiple choice
- 5070/22 Theory
- 5070/41 Alternative to Practical
- 5070/42 Alternative to Practical