Cambridge O Level · 5070 · Paper 1 · Multiple choice
Chemistry 5070/12 May/June 2018 past paper
Cambridge O Level Chemistry (5070) Paper 1 (Multiple choice), variant 2, May/June 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
- 30
File names: 5070_s18_qp_12 · 5070_s18_ms_12
Grade thresholds for 5070/12 May/June 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 |
|---|---|---|---|---|
| 30 | 24 | 19 | 16 | 14 |
Topics in this paper
Which syllabus chapters 5070/12 May/June 2018 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 5070/12 May/June 2018
- Question 1
A student wants to show that the rate of the reaction between calcium carbonate and dilute hydrochloric acid doubles for every 10 °C rise in temperature. The method the student uses is to measure the volume of carbon dioxide released. …
- Question 2
Which mixture can be separated into its components by adding water, stirring and filtering? A calcium carbonate and sodium chloride B magnesium and iron C sodium chloride and copper(II) sulfate D sulfuric acid and hydrochloric acid
- Question 3
Which row gives the correct tests to identify both ammonia and sulfur dioxide? test to identify ammonia test to identify sulfur dioxide A damp blue litmus paper acidified potassium manganate(VII) B damp blue litmus paper damp red litmus paper C …
- Question 4
Two gases, ammonia and hydrogen chloride, at an equal pressure, are allowed to enter the apparatus shown. HCl (g) NH3(g) white solid After a time, a white solid forms on the inside of the tube. Which statements explain why a …
- Question 5
The atomic number of cerium, Ce, is 58. A Ce4+ ion has 140 nucleons in its nucleus. How many protons, neutrons, and electrons are there in one Ce4+ ion? protons neutrons electrons …
- Question 6
The diagrams show the arrangement of particles in three solids: X, Y and Z. The three solids are krypton, potassium and sodium chloride. …
- Question 7
Which statement about solid calcium chloride is correct? A It conducts electricity. B It has a low melting point. C It has an ionic lattice structure. D It is insoluble in water.
- Question 8
Ethane, C2H6, and ammonia, NH3, are covalent compounds. The dot-and-cross diagrams of these compounds are shown. …
- Question 9
Which statement about the structure or bonding of metals is correct? A A metal lattice consists of atoms in a ‘sea of electrons’. B Electrons in a metal move randomly through the lattice. C Metals are malleable because the particles …
- Question 10
When 1 volume of gas R reacts with exactly 5 volumes of oxygen, it forms carbon dioxide and water only. What is R? A butane, C4H10 B ethane, C2H6 C methane, CH4 D propane, C3H8
- Question 11
The relative molecular mass of a compound is 166. What is a possible molecular formula of this compound? …
- Question 12
A mass of 63 g of potassium manganate(VII), KMnO4, is needed for the complete oxidation of 23 g of ethanol, C2H5OH, under acidic conditions. How many moles of ethanol can be completely oxidised by one mole of potassium manganate(VII) under …
- Question 13
The diagrams show an electrolysis experiment using inert electrodes. liquid …
- Question 14
Magnesium can be produced by the electrolysis of molten magnesium chloride, MgCl 2. What are the products formed at the anode and at the cathode during the electrolysis of molten magnesium chloride? anode cathode A chlorine hydrogen B chlorine magnesium …
- Question 15
The diagram shows apparatus that can be used to extract aluminium from its ore. …
- Question 16
A reaction is exothermic. Which diagram shows the correct energy profile diagram for the reaction and the correct enthalpy change? energy reaction pathway A energy reaction pathway B energy reaction pathway C energy reaction pathway D positive ∆H negative ∆H …
- Question 17
Which fraction of petroleum (crude oil) is used as a fuel in aircraft engines? A bitumen B naphtha C paraffin (kerosene) D petrol (gasoline)
- Question 18
The equation for photosynthesis is shown. 6CO2 …
- Question 19
Compound X reacts with an acid to produce sulfur dioxide gas. A sample of X is placed in a flask and acid is added. The sulfur dioxide produced is collected and its volume is measured at various times. A graph …
- Question 20
Which reactions involve oxidation and reduction? 1 chlorine gas reacting with aqueous potassium iodide 2 dilute sulfuric acid reacting with magnesium 3 dilute hydrochloric acid reacting with aqueous sodium hydroxide …
- Question 21
Nitrogen reacts with oxygen in an equilibrium reaction. …
- Question 22
Lead(II) oxide, PbO, reacts with dilute nitric acid, neutralising the acid. Lead(II) oxide also reacts with aqueous sodium hydroxide, neutralising the alkali. Which word best describes lead(II) oxide? A acidic B alkaline C amphoteric D basic
- Question 23
Which pair of reagents are most suitable for the laboratory preparation of copper(II) chloride? A aqueous copper(II) nitrate and aqueous sodium chloride B copper and chlorine C copper and dilute hydrochloric acid D copper(II) oxide and dilute hydrochloric acid
- Question 24
The compounds shown can be used as nitrogenous fertilisers. Which compound has the lowest percentage by mass of nitrogen? A (NH2)2CO [Mr: 60] B (NH4)2SO4 [Mr: 132] C (NH4)3PO4 [Mr: 149] D NH4NO3 [Mr: 80]
- Question 25
The diagram shows three steps in the manufacture of sulfuric acid. sulfur sulfur dioxide sulfur trioxide step P step Q step R sulfuric acid In which steps is a catalyst used? …
- Question 26
Indium (proton number 49) is in Group III of the Periodic Table. Antimony (proton number 51) is in Group V of the Periodic Table. Which statement comparing indium and antimony is correct? A Antimony has more metallic character and more …
- Question 27
The positions of four elements are shown on the outline of part of the Periodic Table. Which element is a solid non-metal at …
- Question 28
Three elements each show oxidation states of +2 and +3. To which part of the Periodic Table do these elements belong? A Group II B Group III C Group V D transition metals
- Question 29
Brass is an alloy. Which statement about brass is correct? A It contains a sea of electrons. B It contains positive and negative ions which are free to move. C It is a compound of a metal and a non-metal. …
- Question 30
Copper(II) oxide reacts with carbon when heated. 2CuO …
- Question 31
The diagram shows a cell that can be used to extract a metal from its oxide. cathode anode molten electrolyte Molten aluminium oxide, copper(II) oxide, lead(II) oxide and magnesium oxide are each electrolysed in separate cells. Each cell receives the …
- Question 32
Iron is obtained in the blast furnace from the ore haematite. Which process takes place in the blast furnace? A Calcium carbonate is used to remove acidic impurities. B Coke is reduced to carbon dioxide. C Haematite is oxidised by …
- Question 33
Aircraft manufacture requires a metal that: 1 has a relatively low density 2 is resistant to corrosion. Which of these conditions does aluminium satisfy? A 1 and …
- Question 34
Which pair of gases are both non-acidic? A ammonia and methane B carbon dioxide and ammonia C methane and nitrogen dioxide D nitrogen dioxide and carbon dioxide
- Question 35
Seawater is desalinated to make it drinkable. What is the main substance removed by desalination? A detergent B fertiliser C sewage D sodium chloride
- Question 36
Which diagram shows a branched-chain isomer of butane? …
- Question 37
A straight-chain alkene, C4H8, undergoes an addition reaction with bromine. What is the possible structure of the product? A CH3CHBrCH2CH2Br B CH3CHBrCHBrCH3 C CH2BrCH2CH2CH2Br D CH3CH2CH2CH2Br
- Question 38
The diagram shows the structure of oxalic acid. oxalic acid …
- Question 39
Some properties of compound J are listed. ● It reacts with potassium carbonate to produce carbon dioxide. ● It reacts with ethanol to produce a sweet-smelling liquid. ● It reacts with sodium hydroxide to produce a salt. What is a …
- Question 40
The diagram shows the formula of nylon. …
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