Cambridge O Level · 5070 · Paper 2 · Theory
Chemistry 5070/21 May/June 2017 past paper
Cambridge O Level Chemistry (5070) Paper 2 (Theory), variant 1, May/June 2017: the question paper and its official mark scheme, 10 questions worth 85 marks, with the grade thresholds. Free to open, no account needed.
- Questions
- 10
- Marks
- 75
- Grade A from
- 53
File names: 5070_s17_qp_21 · 5070_s17_ms_21
Grade thresholds for 5070/21 May/June 2017
The minimum raw marks Cambridge set for each grade on this component (out of 75). Thresholds change every session and variant, so always compare your score with the paper you actually sat.
| A | B | C | D | E |
|---|---|---|---|---|
| 53 | 39 | 26 | 20 | 14 |
Topics in this paper
Which syllabus chapters 5070/21 May/June 2017 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Acids, bases and salts | 3 | 24 |
| Organic chemistry | 2 | 20 |
| Chemical reactions | 1 | 10 |
| The Periodic Table | 1 | 10 |
| Atoms, elements and compounds | 1 | 7 |
| Electrochemistry | 1 | 7 |
| Chemical energetics | 1 | 7 |
Questions in 5070/21 May/June 2017
- Question 1
A1 Choose from the following oxides to answer the questions. calcium oxide carbon dioxide copper(II) oxide silicon dioxide sodium oxide sulfur dioxide sulfur trioxide zinc oxide Each oxide can be used once, more than once or not at all. Which …
- Question 2
A2 (a) Atoms and ions contain three types of sub-atomic particle. Complete the table about these sub-atomic particles. sub-atomic particle relative charge relative mass electron neutron 1 proton +1 (b) The table shows some information about six particles. particle number …
- Question 3
A3 Acids are neutralised by alkalis. (a) Write the ionic equation for the reaction between an acid and an alkali. (b) Sodium sulfate is a soluble salt that can be prepared using a titration method. (i) Name a sodium compound …
- Question 4
A4 Calcium chloride, CaCl2, is an ionic compound. (a) State the electronic configuration for each of the ions in calcium chloride. calcium ion chloride ion (b) When molten calcium chloride is electrolysed, calcium and chlorine are formed. Construct equations for …
- Question 5
A5 Ethanol and butanol are both alcohols. …
- Question 6
A6 Photosynthesis is a reaction that occurs in the leaves of green plants. Carbon dioxide and water are converted into glucose and oxygen. 6CO2 …
- Question 7
B7 Copper reacts with concentrated nitric acid. Cu(s) + 4HNO3(aq) Cu(NO3)2(aq) + 2NO2(g) …
- Question 8
B8 Iodine reacts with chlorine to form iodine(I) chloride, ICl. I2 + Cl2 2ICl Iodine(I) chloride reacts in a similar way to both iodine and chlorine. (a) Sodium reacts with iodine(I) chloride. Construct the equation for the reaction between sodium …
- Question 9
B9 Neon, argon, krypton and xenon are four of the noble gases. They are monatomic elements. (a) State a use of argon. (b) What is meant by the term monatomic ? (c) Explain why the noble gases are very unreactive. …
- Question 10
B10 The table shows some information about the homologous series of unbranched carboxylic acids. name structure boiling point / °C methanoic acid HCO2H 101 ethanoic acid CH3CO2H 118 propanoic acid CH3CH2CO2H 141 butanoic acid CH3CH2CH2CO2H 164 pentanoic acid CH3CH2CH2CH2CO2H …
Other Chemistry papers from May/June 2017
- 5070/11 Multiple choice
- 5070/12 Multiple choice
- 5070/22 Theory
- 5070/41 Alternative to Practical
- 5070/42 Alternative to Practical