Cambridge IGCSE · 0620 · Paper 3 · Theory (Core)
Chemistry 0620/33 Oct/Nov 2020 past paper
Cambridge IGCSE Chemistry (0620) Paper 3 (Theory (Core)), variant 3, Oct/Nov 2020: 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
- 41
File names: 0620_w20_qp_33 · 0620_w20_ms_33
Grade thresholds for 0620/33 Oct/Nov 2020
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 |
|---|---|---|---|---|
| 41 | 35 | 27 | 21 | 15 |
Topics in this paper
Which syllabus chapters 0620/33 Oct/Nov 2020 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Chemistry of the environment | 3 | 35 |
| Acids, bases and salts | 2 | 16 |
| Organic chemistry | 1 | 12 |
| Atoms, elements and compounds | 1 | 9 |
| Electrochemistry | 1 | 8 |
Questions in 0620/33 Oct/Nov 2020
- Question 1
(a) The diagram shows part of the Periodic Table. I II III IV V VI VII VIII Ca H Pt Al Cl Br Ar …
- Question 2
The table shows the mass of air pollutants, in nanograms, in 1000 cm3 samples of air taken over a four month period. mass of pollutant in 1000 cm3 of air / nanograms month oxides of nitrogen sulfur dioxide carbon monoxide …
- Question 3
Some properties of four substances, …
- Question 4
The structure of crotonic acid is shown. …
- Question 5
The formula of ethanol is C2H6O. (a) Draw the structure of ethanol to show all of the atoms and all of the bonds. (b) Ethanol is a liquid at room temperature. Describe the motion and separation of the particles …
- Question 6
The electrolysis of concentrated hydrochloric acid produces gases at each electrode. (a) Describe the electrolysis of concentrated hydrochloric acid. In your answer include: …
- Question 7
A student investigated the rate of reaction of excess calcium carbonate with dilute hydrochloric acid in a conical flask by two different methods. Method 1: Measure the volume of carbon dioxide produced at 10 second intervals. Method 2: Measure the …
- Question 8
This question is about metals and compounds of metals. (a) (i) Sodium is a metal in Group I of the Periodic Table. Identify two correct statements about sodium. Tick two boxes. It is a relatively soft metal. It has a …
Other Chemistry papers from Oct/Nov 2020
- 0620/11 Multiple choice (Core)
- 0620/12 Multiple choice (Core)
- 0620/13 Multiple choice (Core)
- 0620/21 Multiple choice (Extended)
- 0620/22 Multiple choice (Extended)
- 0620/23 Multiple choice (Extended)
- 0620/31 Theory (Core)
- 0620/32 Theory (Core)
- 0620/41 Theory (Extended)
- 0620/42 Theory (Extended)
- 0620/43 Theory (Extended)
- 0620/61 Alternative to Practical
- 0620/62 Alternative to Practical
- 0620/63 Alternative to Practical