Cambridge IGCSE · 0620 · Paper 3 · Theory (Extended)
Chemistry 0620/32 Oct/Nov 2010 past paper
Cambridge IGCSE Chemistry (0620) Paper 3 (Theory (Extended)), variant 2, Oct/Nov 2010: 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
- 43
File names: 0620_w10_qp_32 · 0620_w10_ms_32
Grade thresholds for 0620/32 Oct/Nov 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 |
|---|---|---|---|---|
| 43 | 0 | 26 | 0 | 18 |
Topics in this paper
Which syllabus chapters 0620/32 Oct/Nov 2010 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Acids, bases and salts | 3 | 37 |
| Organic chemistry | 1 | 15 |
| Electrochemistry | 1 | 12 |
| Chemistry of the environment | 1 | 10 |
| States of matter | 1 | 6 |
Questions in 0620/32 Oct/Nov 2010
- Question 1
For Examiner’s Use 1 The following table gives information about six substances. substance melting point / °C boiling point / °C electrical conductivity as a solid electrical conductivity as a liquid …
- Question 2
For Examiner’s Use 2 An ore of the important metal zinc is zinc blende, ZnS. This is changed into zinc oxide which is reduced to the impure metal by carbon reduction. (a) (i) How is zinc oxide obtained from zinc …
- Question 3
For Examiner’s Use 3 The decomposition of hydrogen peroxide is catalysed by manganese(IV) oxide. 2H2O2(aq) …
- Question 4
For Examiner’s Use 4 Chromium is a transition element. (a) (i) Predict two differences in the physical properties of chromium and sodium. (ii) Predict two differences in the chemical properties of chromium and sodium. (b) Chromium is used to electroplate …
- Question 5
For Examiner’s Use 5 In the absence of oxygen, certain bacteria decompose carbohydrates to biogas. This is a mixture of gases mainly methane and carbon dioxide. Biogas is becoming an increasingly important fuel around the world. A diagram of a …
- Question 6
For Examiner’s Use 6 The alcohols form an homologous series. (a) Give three characteristics of an homologous series. (b) The following two alcohols are members of the series and they are isomers. CH3 — CH2 — CH2 — CH2 — …
- Question 7
For Examiner’s Use 7 The major use of sulfur dioxide is to manufacture sulfuric acid. (a) (i) Another use of sulfur dioxide is as the food additive E220. How does it preserve food? (ii) Why is sulfur dioxide used in …
Other Chemistry papers from Oct/Nov 2010
- 0620/11 Multiple choice (Core)
- 0620/12 Multiple choice (Core)
- 0620/13 Multiple choice (Core)
- 0620/21 Theory (Core)
- 0620/22 Theory (Core)
- 0620/23 Theory (Core)
- 0620/31 Theory (Extended)
- 0620/33 Theory (Extended)
- 0620/61 Alternative to Practical
- 0620/62 Alternative to Practical
- 0620/63 Alternative to Practical