Cambridge IGCSE · 0620 · Paper 2 · Theory (Core)
Chemistry 0620/23 May/June 2012 past paper
Cambridge IGCSE Chemistry (0620) Paper 2 (Theory (Core)), variant 3, May/June 2012: 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
File names: 0620_s12_qp_23 · 0620_s12_ms_23
Grade thresholds for 0620/23 May/June 2012
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 0620/23 May/June 2012 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Chemistry of the environment | 2 | 24 |
| Experimental techniques and chemical analysis | 1 | 14 |
| Metals | 1 | 12 |
| Organic chemistry | 1 | 12 |
| Electrochemistry | 1 | 11 |
| Acids, bases and salts | 1 | 7 |
Questions in 0620/23 May/June 2012
- Question 1
For Examiner’s Use 1 (a) Gases can be identifi ed by carrying out particular tests. Some gases and tests to identify them are shown below. Match the gases on the left with the tests on the right. The fi rst …
- Question 2
For Examiner’s Use 2 Alkalis are soluble bases. (a) Which one of the following is alkaline? Put a ring around the correct answer. distilled water hydrochloric acid sodium chloride solution sodium hydroxide solution (b) Suggest a pH value for a …
- Question 3
For Examiner’s Use 3 The table below shows some properties of the halogens. halogen melting point / °C boiling point / °C colour chlorine –101 –35 bromine –7 +59 iodine +114 +184 greyish-black (a) (i) Complete the spaces in the …
- Question 4
For Examiner’s Use 4 The diagram below shows the structure of some substances containing nitrogen. CH2 H2N COOH …
- Question 5
For Examiner’s Use 5 Iron is a shiny metallic solid. Iron is a transition element. (a) State three other physical properties of a transition element. (b) Iron reacts with sulfuric acid. Fe + H2SO4 → FeSO4 …
- Question 6
For Examiner’s Use 6 The diagram shows a fractionating column used to separate different hydrocarbon fractions in an oil refi nery. petroleum refinery gas fractions gasoline A kerosene diesel oil fuel oil lubricating oil bitumen (a) On the diagram, draw …
- Question 7
For Examiner’s Use 7 A student placed some crystals of salt at the bottom of a beaker of distilled water. She left the contents of the beaker to stand for one hour. The diagram below shows her observations. distilled water …
Other Chemistry papers from May/June 2012
- 0620/11 Multiple choice (Core)
- 0620/12 Multiple choice (Core)
- 0620/13 Multiple choice (Core)
- 0620/21 Theory (Core)
- 0620/22 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