Cambridge O Level · 5070 · Paper 1 · Multiple choice
Chemistry 5070/11 Oct/Nov 2018 past paper
Cambridge O Level Chemistry (5070) Paper 1 (Multiple choice), variant 1, Oct/Nov 2018: 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
- 31
File names: 5070_w18_qp_11 · 5070_w18_ms_11
Grade thresholds for 5070/11 Oct/Nov 2018
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 |
|---|---|---|---|---|
| 31 | 25 | 19 | 17 | 15 |
Topics in this paper
Which syllabus chapters 5070/11 Oct/Nov 2018 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 5070/11 Oct/Nov 2018
- Question 1
A student titrates aqueous sodium hydroxide from a burette with dilute hydrochloric acid in a conical flask. After the titration is complete, the conical flask is emptied. What is the correct procedure before the next titration? A Rinse out the …
- Question 2
The results of a paper chromatography experiment are shown. X is an aqueous solution of a salt of a Group I element. Y is an aqueous solution of a salt of a transition element. origin solvent front Y X Which …
- Question 3
A substance dissolves in water to form a colourless solution. This solution reacts with aqueous silver nitrate in the presence of dilute nitric acid to give a yellow precipitate. What is the possible identity of the substance? A calcium iodide …
- Question 4
Which statements are correct? 1 The volume of a gas at constant pressure increases as the temperature increases. 2 The rate of diffusion of a gas increases as the temperature increases. 3 The pressure of a gas at constant volume …
- Question 5
Which row shows the numbers of particles in …
- Question 6
Which substance has a giant covalent structure at room temperature? A methane B sand C sodium chloride D water
- Question 7
Magnesium oxide has a high melting point. It is used to line the inside of furnaces that operate at high temperatures. Why does magnesium oxide have a high melting point? A It has metallic bonds. B It has strong forces …
- Question 8
What is the dot-and-cross diagram for NCl 3? Cl N A Cl Cl Cl N B Cl Cl Cl N C Cl Cl Cl N D Cl Cl
- Question 9
Two properties of a metal are given. 1 It is malleable. 2 It conducts electricity. Which of these properties are due to the layers of positive ions being able to move? A 1 only B 2 only C both 1 …
- Question 10
What are the relative formula masses of one mole of solid magnesium and one mole of gaseous chlorine? magnesium chlorine …
- Question 11
Complete combustion of a hydrocarbon produces only carbon dioxide, CO2, and water, …
- Question 12
What is observed during the electrolysis of aqueous copper(II) sulfate using carbon electrodes? A A pink solid is deposited on the anode. B Bubbles form on the negative electrode. C The colour of the solution fades. D The negative electrode …
- Question 13
Electrolysis is used to plate a metal statue with silver. The statue is an electrode in a suitable electrolyte. Which row is correct? statue electrolyte A cathode AgCl (aq) B cathode AgNO3(aq) C anode AgCl (aq) D anode AgNO3(aq)
- Question 14
Which statements about endothermic reactions are correct? 1 Energy is absorbed from the surroundings. 2 Energy is released to the surroundings. 3 The temperature of the reaction mixture falls. 4 The temperature of the reaction mixture rises. A 1 and …
- Question 15
The equation represents the reaction between two gases, X2 and Y2, to form compound XY. …
- Question 16
The equation shows the reaction for the manufacture of ammonia. …
- Question 17
When bismuth(III) chloride, BiCl 3, is added to water, a reaction occurs and a white precipitate of BiOCl is formed. BiCl 3(aq) + H2O(l) BiOCl (s) + 2HCl (aq) Which changes increase the mass of white precipitate formed? 1 adding …
- Question 18
Calcium carbonate reacts with dilute hydrochloric acid to produce carbon dioxide. The carbon dioxide is collected using the apparatus shown. reaction mixture gas syringe conical flask The reaction is done four times. For each reaction, 25 g of calcium carbonate …
- Question 19
Many reactions involve oxidation and reduction. Which statement is correct? A Acidified manganate(VII) ions change colour from colourless to purple when reduced. B All reactions that involve oxidation also involve reduction. C During a reaction, oxidising agents lose electrons. D …
- Question 20
Three separate mixtures of a solution and a solid are made, as shown in the table. The mixtures are warmed. In which mixtures does gas form? NaOH(aq) and NH4Cl (s) H2SO4(aq) and NH4Cl (s) H2SO4(aq) and Mg(s) …
- Question 21
Insoluble salts are prepared by reacting aqueous solutions of soluble salts. A precipitate forms. Which pairs of aqueous solutions form a precipitate? 1 barium chloride and nitric acid 2 barium chloride and sulfuric acid 3 barium nitrate and nitric acid …
- Question 22
The diagram shows the main stages in the manufacture of an ammonia-based fertiliser. N2(g) H2(g) iron …
- Question 23
What is a use of sulfuric acid? A as a bleach B as a food preservative C in the manufacture of detergents D in the manufacture of vanadium(V) oxide, V2O5
- Question 24
Which property shows an increasing trend in the elements, from Group I to Group VII, across a period of the Periodic Table? A ability to form anions B metallic character C number of electron shells D reactivity with water
- Question 25
The melting point of lithium is 181 °C. The melting point of sodium is 98 °C. Which statement explains why lithium has a higher melting point than sodium? A Lithium has more valency electrons than sodium. B Sodium is more …
- Question 26
From their position in the Periodic Table, which properties would you expect the elements vanadium, chromium and cobalt to have? 1 variable oxidation states 2 coloured compounds 3 high melting points …
- Question 27
The diagram shows the structure of an alloy. Which statement about alloys is correct? A Alloys can only be formed by mixing copper or iron with other metals. B High carbon steel alloys are soft and easily shaped. C In …
- Question 28
The list shows the position of metal X in the reactivity series of metals. Na Al Fe X Cu Ag Which methods could be used to extract metal X? 1 electrolysis of the solid metal oxide 2 heating the metal …
- Question 29
An old commercial process for aluminium extraction used large quantities of sodium to convert aluminium ions into aluminium atoms. The modern aluminium extraction process uses electrolysis. Which statements are correct? In the old process: 1 The sodium acted as an …
- Question 30
Which element is always present in steel? A calcium B copper C iron D zinc
- Question 31
Aluminium is used to make saucepans because of its apparent lack of reactivity. Which property of aluminium explains its unreactivity? A It has a layer of oxide on its surface. B It has a low density. C It is a …
- Question 32
Pollutant gases are released by the bacterial decay of vegetable matter. The bacterial decay of vegetable matter is the main source of which gas? A carbon monoxide B methane C nitrogen dioxide D sulfur dioxide
- Question 33
Lakes contain a variety of dissolved substances. Which substance is responsible for eutrophication in lakes? A metal compounds B nitrate fertilisers C oxygen D sulfuric acid
- Question 34
How many of the molecules shown belong to the homologous series of alkanes? …
- Question 35
The diagram shows the structural formula of an organic compound. …
- Question 36
Which statement about vegetable oil and the margarine made from it is correct? A Both are liquids at room temperature. B Both occur naturally. C Margarine has the higher melting point. D Vegetable oil has fewer carbon-carbon double bonds than …
- Question 37
Which group is found in alcohols? …
- Question 38
An ester is formed from a carboxylic acid and an alcohol. How does the number of carbon, hydrogen and oxygen atoms in an ester differ from the total number of these atoms in the carboxylic acid and alcohol from which …
- Question 39
Which statement about the composition of polymers is correct? A Nylon contains oxygen atoms but not nitrogen atoms. B Proteins contain both nitrogen atoms and oxygen atoms. C Terylene contains nitrogen atoms. D The polymer used to make clingfilm contains …
- Question 40
Poly(styrene) is an addition polymer. The partial structure of poly(styrene) is shown. …
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