Cambridge IGCSE ยท 0620 ยท Paper 3 ยท Theory (Extended)
Chemistry 0620/31 May/June 2014 past paper
Cambridge IGCSE Chemistry (0620) Paper 3 (Theory (Extended)), variant 1, May/June 2014: 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
- Grade A from
- 39
File names: 0620_s14_qp_31 ยท 0620_s14_ms_31
Grade thresholds for 0620/31 May/June 2014
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 |
|---|---|---|---|---|
| 39 | 32 | 24 | 19 | 13 |
Topics in this paper
Which syllabus chapters 0620/31 May/June 2014 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Stoichiometry | 2 | 21 |
| Acids, bases and salts | 1 | 15 |
| Electrochemistry | 1 | 12 |
| The Periodic Table | 1 | 11 |
| Atoms, elements and compounds | 1 | 7 |
| Experimental techniques and chemical analysis | 1 | 7 |
| States of matter | 1 | 7 |
Questions in 0620/31 May/June 2014
- Question 1
The table below gives the composition of six particles which are either atoms or ions. particle number of protons number of neutrons number of electrons โฆ
- Question 2
(a) Water is needed for industry and in the home. (i) Rain water is collected in reservoirs. How is it treated before entering the water supply? (ii) State two industrial uses of water. (iii) State two uses of water in โฆ
- Question 3
(a) Different gases diffuse at different speeds. (i) What is meant by the term diffusion? (ii) What property of a gas molecule affects the speed at which it diffuses? (b) Helium is a gas used to ๏ฌ ll balloons. It โฆ
- Question 4
In the Periodic Table, the elements are arranged in columns called Groups and in rows called Periods. (a) (i) Complete the table for some of the elements in Period 3. group number I II III IV V VI VII symbol โฆ
- Question 5
Zinc is obtained from the ore, zinc blende, ZnS. (a) Describe the extraction of zinc from its ore, zinc blende. Include at least one balanced equation in your description. (b) State two major uses of zinc.
- Question 6
Hydrogen peroxide decomposes to form water and oxygen. This reaction is catalysed by manganese(IV) oxide. 2H2O2(aq) โฆ
- Question 7
One way of establishing a reactivity series is by displacement reactions. (a) A series of experiments was carried out using the metals lead, magnesium, zinc and silver. Each metal was added in turn to aqueous solutions of the metal nitrates. โฆ
- Question 8
Polymers are made by the polymerisation of simple molecules called monomers. (a) (i) The structural formula of a polymer is given below. n CH CH3 CH CH3 This polymer is made by addition polymerisation. Draw the structural formula of its โฆ
Other Chemistry papers from May/June 2014
- 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)
- 0620/32 Theory (Extended)
- 0620/33 Theory (Extended)
- 0620/61 Alternative to Practical
- 0620/62 Alternative to Practical
- 0620/63 Alternative to Practical