Cambridge IGCSE ยท 0620 ยท Paper 2 ยท Multiple choice (Extended)
Chemistry 0620/21 Oct/Nov 2016 past paper
Cambridge IGCSE Chemistry (0620) Paper 2 (Multiple choice (Extended)), variant 1, Oct/Nov 2016: the question paper and its official mark scheme, 40 questions, with the grade thresholds. Free to open, no account needed.
- Questions
- 40
- Marks
- 40
- Grade A from
- 26
File names: 0620_w16_qp_21 ยท 0620_w16_ms_21
Grade thresholds for 0620/21 Oct/Nov 2016
The minimum raw marks Cambridge set for each grade on this component (out of 40). Thresholds change every session and variant, so always compare your score with the paper you actually sat.
| A | B | C | D | E | F | G |
|---|---|---|---|---|---|---|
| 26 | 23 | 20 | 17 | 15 | 11 | 7 |
Topics in this paper
Which syllabus chapters 0620/21 Oct/Nov 2016 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Acids, bases and salts | 9 | โ |
| Metals | 6 | โ |
| Stoichiometry | 4 | โ |
| Atoms, elements and compounds | 4 | โ |
| Chemical reactions | 4 | โ |
| Chemistry of the environment | 4 | โ |
| Organic chemistry | 4 | โ |
| Chemical energetics | 2 | โ |
| The Periodic Table | 2 | โ |
| Experimental techniques and chemical analysis | 1 | โ |
Questions in 0620/21 Oct/Nov 2016
- Question 1
โParticles moving very slowly from an area of higher concentration to an area of lower concentration.โ Which process is being described? A a liquid being frozen B a solid melting C a substance diffusing through a liquid D a substance โฆ
- Question 2
A student mixes 25 cm3 samples of dilute hydrochloric acid with different volumes of aqueous sodium hydroxide. In each case, the student measures the change in temperature to test if the reaction is exothermic. Which piece of apparatus is not โฆ
- Question 3
Information about the solubility of four solids, โฆ
- Question 4
The table shows information about atoms of three different elements. element proton number nucleon number number of protons number of neutrons number of electrons chlorine โฆ
- Question 5
Metal P reacts with non-metal Q to form a compound. Which process takes place and which type of compound is formed? process type of compound A electrons are transferred from P to Q covalent B electrons are transferred from P โฆ
- Question 6
The structure of ethanoic acid is shown. โฆ
- Question 7
X is a solid at room temperature. X has a high melting point. Solid X conducts electricity. Which diagram shows how the particles are arranged in solid โฆ
- Question 8
Benzene is a liquid with molecular formula C6H6. Ethene is a gas with molecular formula C2H4. Which statement is correct? A 1 mole of benzene and 1 mole of ethene contain the same number of atoms. B 1 mole of โฆ
- Question 9
Sodium hydrogencarbonate undergoes thermal decomposition as shown. 2NaHCO3 โ Na2CO3 + CO2 + H2O What is the maximum mass of sodium carbonate that can be made from 0.100 moles of sodium hydrogencarbonate? โฆ
- Question 10
Which apparatus could be used to electroplate an iron nail with copper? โฆ
- Question 11
The diagram shows a simple cell. electrolyte metal Y metal X voltmeter V Which two metals produce the highest reading on the voltmeter? โฆ
- Question 12
When anhydrous copper(II) sulfate is added to water a solution is formed and heat is given out. water anhydrous copper(II) sulfate thermometer Which row shows the temperature change and the type of reaction taking place? temperature change type of reaction โฆ
- Question 13
The energy level diagram for a reaction is shown. energy products reactants Ea ฮH Which statement is not correct for this energy level diagram? A It could be the energy level diagram for the reaction when petrol is burnt. B โฆ
- Question 14
The rate of reaction between magnesium and excess dilute hydrochloric acid was followed by measuring the mass of magnesium present at regular time intervals. Two experiments were performed. Both experiments used 0.1 g of magnesium ribbon. The acid in experiment โฆ
- Question 15
Which statement explains why coal dust forms an explosive mixture with air? A Coal dust catalyses the explosion. B Coal dust has a large surface area. C Crushing coal increases the concentration of the coal. D Crushing coal increases the โฆ
- Question 16
The following reversible reaction takes place in a closed vessel at constant temperature. โฆ
- Question 17
Four ionic half-equations are shown. 1 Cu2+(aq) โฆ
- Question 18
Germanium oxide is a white powder. Germanium oxide reacts with concentrated hydrochloric acid. Germanium oxide reacts with concentrated aqueous sodium hydroxide. Germanium oxide does not dissolve when added to water. Which type of oxide is germanium oxide? A acidic B โฆ
- Question 19
Hydrogen chloride gas reacts with water to produce an acidic solution. The equation for the reaction is shown. HCl โฆ
- Question 20
The apparatus shown is used to prepare aqueous copper(II) sulfate. Y stirrer solid X aqueous copper(II) sulfate excess of solid X filter paper heat What are X and โฆ
- Question 21
Information about some silver compounds is shown in the table. compound formula solubility in water silver carbonate Ag2CO3 insoluble silver chloride AgCl insoluble silver nitrate AgNO3 soluble silver oxide Ag2O insoluble Which equation shows a reaction which cannot be used โฆ
- Question 22
What is not a property of Group I metals? A They are soft and can be cut with a knife. B They react when exposed to oxygen in the air. C They produce an acidic solution when they react with โฆ
- Question 23
Four substances, P, Q, R and S, are tested as shown. test substance โฆ
- Question 24
Which statement about transition elements and their compounds is correct? A All the transition elements have an oxidation state of +2 only. B Aqueous solutions of the salts of transition elements are generally coloured. C Transition elements change from metal โฆ
- Question 25
Impure iron from the blast furnace is converted to steel as shown. oxygen impure molten iron Which statement about the process is correct? A Acidic oxides are added to remove alkaline impurities. B Coke is added as a reducing agent. โฆ
- Question 26
The ionic equations represent the reactions between four metals, โฆ
- Question 27
Aluminium is extracted by electrolysis. From which ore is aluminium extracted and at which electrode is aluminium deposited during electrolysis? ore electrode A bauxite negative B bauxite positive C cryolite negative D cryolite positive
- Question 28
Zinc oxide can be reacted with carbon to produce zinc metal. Which equation for this reaction is correct? A 2ZnO โฆ
- Question 29
Air is a mixture of gases. Which gas is present in the largest amount? A argon B carbon dioxide C nitrogen D oxygen
- Question 30
Which information about carbon dioxide and methane is correct? carbon dioxide methane A formed when vegetation decomposes key B greenhouse gas โฆ
- Question 31
Underwater steel pipes can be protected from corrosion by attaching magnesium blocks to them. Which equation represents the reaction that prevents corrosion? A Fe โ Fe2+ โฆ
- Question 32
Ammonia is manufactured by the Haber process. The reaction is exothermic. โฆ
- Question 33
Sulfuric acid is manufactured by the Contact process. The most important reaction takes place in the presence of a catalyst. What are the reactants and the catalyst for this reaction? reactants catalyst A sulfur and oxygen vanadium(V) oxide B sulfur โฆ
- Question 34
Which box corresponds to limestone? Does limestone contain carbon? yes no yes no Does limestone burn? Does limestone burn? A B yes no C D
- Question 35
Petroleum is an important fossil fuel. Which row correctly describes petroleum? type of substance composition A compound mainly hydrocarbons B compound only hydrogen and carbon C mixture mainly hydrocarbons D mixture only hydrogen and carbon
- Question 36
Butane reacts as shown. butane butene + hydrogen catalyst and heat What is this type of reaction? A combustion B cracking C polymerisation D reduction
- Question 37
Substance Z has the following characteristics. 1 It burns in an excess of oxygen to form carbon dioxide and water. 2 It is oxidised by air to form a liquid smelling of vinegar. 3 It reacts with carboxylic acids to โฆ
- Question 38
Ethanol is manufactured by the catalytic addition of steam to ethene and by fermentation. Which row shows an advantage and a disadvantage of using the catalytic addition of steam to ethene compared to fermentation? advantage disadvantage A fast the product โฆ
- Question 39
The partial structure of addition polymer X is shown. C CH3 โฆ
- Question 40
The diagram shows the partial structure of Terylene. โฆ
Other Chemistry papers from Oct/Nov 2016
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