Cambridge O Level · 5070 · Paper 1 · Multiple choice
Chemistry 5070/12 Oct/Nov 2016 past paper
Cambridge O Level Chemistry (5070) Paper 1 (Multiple choice), variant 2, 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
- 30
File names: 5070_w16_qp_12 · 5070_w16_ms_12
Grade thresholds for 5070/12 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 |
|---|---|---|---|---|
| 30 | 24 | 18 | 16 | 14 |
Topics in this paper
Which syllabus chapters 5070/12 Oct/Nov 2016 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 5070/12 Oct/Nov 2016
- Question 1
When measured under the same conditions, which gas diffuses at the same rate as nitrogen? A ammonia, NH3 B carbon monoxide, CO C ethane, C2H6 D oxygen, O2
- Question 2
When calcium carbonate is added to dilute hydrochloric acid, carbon dioxide gas is released. Three sets of apparatus are shown. CaCO3(s) + HCl (aq) gas syringe CaCO3(s) + HCl (aq) water measuring cylinder thistle funnel tap funnel …
- Question 3
Which statement is correct? A Carbon monoxide reduces sodium oxide to sodium. B During the electrolysis of copper(II) sulfate solution, hydrogen is liberated at the positive electrode. C Recycling aluminium conserves the Earth’s finite supply of haematite. D Iron oxide …
- Question 4
Benzene and cyclohexane are both flammable liquids. They are able to mix with each other without separating into two layers. They have very similar boiling points. It is difficult to separate a mixture of these two liquids by fractional distillation. …
- Question 5
The graph gives the melting points (m.p.) of mixtures of lead and tin. …
- Question 6
Which statement about chlorine atoms and chloride ions is correct? A They are both isotopes of chlorine. B They undergo the same chemical reactions. C They have the same number of protons. D They have the same physical properties.
- Question 7
When substance Q melts, only weak forces of attraction between its molecules are overcome. Which row correctly describes Q? melting point / °C electrical conduction of solid …
- Question 8
A solution containing lead(II) ions is added to a solution containing iodide ions. A yellow precipitate is formed. What is the equation for the reaction that occurs? A Pb+ …
- Question 9
Buckminsterfullerene has the chemical formula C60. carbon atom buckminsterfullerene How is the structure of buckminsterfullerene best described? A a covalent compound B an ionic compound C a polymer D molecular
- Question 10
Which diagram correctly shows the arrangement of the ions in solid sodium chloride? A Cl – Cl – Cl – Cl – Na+ Na+ Na+ Na+ B Na+ Na+ Cl – Cl – Na+ Na+ Cl – Cl – C …
- Question 11
Aqueous sodium hydroxide is added to a sample of a colourless solution. Aqueous ammonia is added to a separate sample of the colourless solution. In both cases a white precipitate forms which is soluble in excess reagent. Which positive ion …
- Question 12
In an experiment, 1 cm3 of a gaseous hydrocarbon, Z, requires 4 cm3 of oxygen for complete combustion to give 3 cm3 of carbon dioxide. All gas volumes are measured at r.t.p. Which formula represents …
- Question 13
Which is the best conductor of electricity? A diamond B magnesium C pure ethanoic acid D solid sodium chloride
- Question 14
Molten salts of four metals are electrolysed. The ions of which metal require the smallest number of electrons for one mole of atoms to be liberated during electrolysis? A aluminium B calcium C iron D sodium
- Question 15
An endothermic reaction has an activation energy of x. Which energy profile diagram is correct for this reaction? A reaction pathway energy reactants products B C reaction pathway energy reactants products D reaction pathway energy reactants products …
- Question 16
The following statements refer to the use of catalysts in chemical reactions. 1 A catalyst increases the activation energy of a reaction. 2 A catalyst increases the rate of a reaction. 3 A catalyst increases the yield of a reaction. …
- Question 17
In two experiments, 1 and 2, an excess of powdered calcium carbonate was reacted in a flask with dilute hydrochloric acid. In experiment 1, the carbon dioxide evolved was collected and the volume of gas measured at regular intervals. In …
- Question 18
Iron(II) ions react with chlorine. 2Fe2+(aq) + Cl 2(g) → 2Fe3+(aq) + 2Cl –(aq) Which statement about this reaction is correct? A Chlorine is reduced by iron(II) ions. B Chlorine is the reducing agent. C Iron(II) ions are reduced by …
- Question 19
When water is liquid, it ionises slightly. H2O(l) H+(aq) + OH–(aq) The forward reaction is endothermic. When the temperature of water is increased, which change(s) take place? 1 The water becomes acidic. 2 The water becomes alkaline. 3 More water …
- Question 20
The table shows some properties of four metal chlorides. Which row is magnesium chloride? colour solubility in water method of preparation A green insoluble precipitation B green soluble metal and acid C white insoluble precipitation D white soluble metal and …
- Question 21
Which statement about the uses of metals is not correct? A Aluminium is used for making food containers and electrical cables. B Copper is used for making brass. C Iron is used as a catalyst in the contact process. D …
- Question 22
A lump of element X can be cut by a knife. During its reaction with water, X floats and melts. What is X? A calcium B copper C magnesium D potassium
- Question 23
Which row is a transition element? melting point / °C density in g / cm3 …
- Question 24
Element Z combines with sodium to form the compound Na2Z. The positions of four elements are shown on the outline of part of the Periodic Table. Which is element …
- Question 25
The table shows the observations made when an aqueous solution of salt Z has different reagents added to it. reagent(s) added observation aqueous sodium hydroxide green precipitate formed dilute nitric acid then aqueous barium nitrate white precipitate formed What is …
- Question 26
The diagram shows the apparatus used to extract aluminium from aluminium oxide. carbon electrodes electrolyte aluminium Which statement about this process is correct? A The electrolyte is a solid mixture of aluminium oxide and cryolite. B The electrolyte is aluminium …
- Question 27
Which reaction is not a redox reaction? A CaCO3 → CaO + CO2 …
- Question 28
Aqueous copper(II) sulfate solution is placed in an iron container and left to stand for several days. Which statement describes what happens? A Atmospheric oxygen reacts with the copper(II) sulfate to give black copper(II) oxide. B Some fine iron particles …
- Question 29
In the manufacture of paper, sulfur dioxide is used to remove the yellow colour from the wood pulp. Which term can be used to describe sulfur dioxide in this process? A a bleach B a catalyst C an oxidising agent …
- Question 30
Which statement about the uses of gases is not correct? A Helium is used in balloons because it is unreactive and less dense than air. B Hydrogen is used in an addition reaction with saturated vegetable oils to form margarine. …
- Question 31
Electrical energy can be generated using simple cells as shown. V metals electrolyte Which pair of metals, when used as electrodes, will give the largest reading on the voltmeter, V? A lead and sodium B magnesium and copper C potassium …
- Question 32
When reacted with an excess of dilute hydrochloric acid, 0.002 moles of a metal M liberated 48 cm3 of hydrogen measured at r.t.p. Which equation is correct for this reaction? …
- Question 33
The diagram shows a section of a polymer. …
- Question 34
The table shows some atmospheric pollutants and their possible effects. Which row is not correct? pollutant effect A CFCs cause depletion of the ozone layer B CO2 forms photochemical smog C CO is poisonous to humans D NO2 forms acid …
- Question 35
Which compound is the most viscous and the least flammable? …
- Question 36
How many moles of ethanoic acid, CH3CO2H, react with one mole of magnesium? …
- Question 37
With which substance will ethene react to form more than one product? A argon B hydrogen C oxygen D steam
- Question 38
Which statement about isomers of a compound is always correct? A They have different empirical formulae. B They have different relative molecular masses. C They have only carbon and hydrogen in their molecules. D They have the same molecular formula.
- Question 39
How many of the structures show an unsaturated hydrocarbon molecule? …
- Question 40
Which type of polymer is made by reacting amino acids together? A an addition polymer B a carbohydrate C a polyamide D a polyester Group The Periodic Table of Elements 1 H hydrogen 1 2 He helium 4 I II …
Other Chemistry papers from Oct/Nov 2016
- 5070/11 Multiple choice
- 5070/21 Theory
- 5070/22 Theory
- 5070/41 Alternative to Practical
- 5070/42 Alternative to Practical