Cambridge IGCSE · 0620 · Paper 2 · Theory (Core)
Chemistry 0620/21 May/June 2010 past paper
Cambridge IGCSE Chemistry (0620) Paper 2 (Theory (Core)), variant 1, May/June 2010: 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
File names: 0620_s10_qp_21 · 0620_s10_ms_21
Grade thresholds for 0620/21 May/June 2010
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 | 48 | 0 | 31 |
Topics in this paper
Which syllabus chapters 0620/21 May/June 2010 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Acids, bases and salts | 2 | 21 |
| Atoms, elements and compounds | 1 | 14 |
| Organic chemistry | 1 | 12 |
| Metals | 1 | 10 |
| Stoichiometry | 1 | 9 |
| Electrochemistry | 1 | 8 |
| Chemistry of the environment | 1 | 6 |
Questions in 0620/21 May/June 2010
- Question 1
For Examiner’s Use 1 Choose from the following list of gases to answer the questions. ammonia carbon monoxide chlorine ethene methane nitrogen nitrogen dioxide oxygen propane Each gas can be used once, more than once or not at all. Which …
- Question 2
For Examiner’s Use 2 This question is about hydrogen and some compounds containing hydrogen. (a) Hydrogen is a gas at room temperature. Describe the arrangement and motion of the molecules in hydrogen gas. arrangement motion (b) Draw the electronic structure …
- Question 3
For Examiner’s Use 3 Some pink cobalt chloride was heated gently in a test-tube. The cobalt chloride turned blue. A few drops of water were then added to the blue cobalt chloride. The cobalt chloride turned pink. water blue cobalt …
- Question 4
For Examiner’s Use 4 The table shows the mass of various compounds obtained when 500 cm3 of seawater is evaporated. compound ions present mass of compound / g sodium chloride Na+ and Cl – 14.0 magnesium chloride Mg2+ and Cl …
- Question 5
For Examiner’s Use 5 Ammonium sulfate is used in fertilisers. (a) State the names of the three elements found in most fertilisers. …
- Question 6
For Examiner’s Use 6 Many metals are extracted from their ores by reduction with carbon. (a) Name the main ore of iron. (b) Iron is extracted from its ore in a blast furnace. (i) Other than iron ore, state the …
- Question 7
For Examiner’s Use 7 Petroleum is a mixture of hydrocarbons. Two of the processes carried out in an oil refi nery are fractional distillation of petroleum and cracking of hydrocarbon fractions. (a) Which property of hydrocarbons is used to separate …
- Question 8
For Examiner’s Use 8 Some substances conduct electricity, others do not. (a) Which three of the following conduct electricity? Tick three boxes. aqueous sodium chloride ceramics copper graphite sodium chloride crystals sulfur (b) State the name given to a substance, …
Other Chemistry papers from May/June 2010
- 0620/11 Multiple choice (Core)
- 0620/12 Multiple choice (Core)
- 0620/13 Multiple choice (Core)
- 0620/22 Theory (Core)
- 0620/23 Theory (Core)
- 0620/31 Theory (Extended)
- 0620/32 Theory (Extended)
- 0620/33 Theory (Extended)
- 0620/61 Alternative to Practical
- 0620/62 Alternative to Practical
- 0620/63 Alternative to Practical