Cambridge O Level · 5070 · Paper 1 · Multiple choice
Chemistry 5070/12 Oct/Nov 2014 past paper
Cambridge O Level Chemistry (5070) Paper 1 (Multiple choice), variant 2, Oct/Nov 2014: 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
- 29
File names: 5070_w14_qp_12 · 5070_w14_ms_12
Grade thresholds for 5070/12 Oct/Nov 2014
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 |
|---|---|---|---|---|
| 29 | 22 | 17 | 15 | 13 |
Topics in this paper
Which syllabus chapters 5070/12 Oct/Nov 2014 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 5070/12 Oct/Nov 2014
- Question 1
A student wants to carry out an experiment to follow the rate of the reaction between hydrochloric acid and marble chips. CaCO3 + 2HCl → CaCl 2 + CO2 + H2O Which diagrams show apparatus that is suitable for this …
- Question 2
Solutions of lead(II) nitrate and potassium iodide are mixed together in the preparation of lead(II) iodide. Which method can be used to separate the lead(II) iodide from the mixture? A crystallisation B distillation C evaporation D filtration
- Question 3
A small amount of aqueous copper(II) sulfate is put into a test-tube. A few drops of aqueous ammonia are added to the test-tube. Then an excess of aqueous ammonia is added to the same test-tube. What are the two observations? …
- Question 4
An atom of element Z has 14 neutrons and 13 protons. It forms a positive ion. How many electrons does the ion of Z have? …
- Question 5
Which gas is neither an element nor a compound? A ammonia B chlorine C air D carbon monoxide
- Question 6
Why does ammonia gas diffuse faster than hydrogen chloride gas? A Ammonia has a higher boiling point than hydrogen chloride. B Ammonia is a base, hydrogen chloride is an acid. C The ammonia molecule contains more atoms than a hydrogen …
- Question 7
The compound formed between elements X and Y is ionic. Which statement about elements X and Y is correct? A X and Y are both at the left-hand side of the Periodic Table. B X and Y are both at …
- Question 8
The experiment shown is used to test potassium bromide crystals. electrodes beaker lamp potassium bromide crystals The lamp does not light. Distilled water is then added to the beaker and the lamp lights. Which statement explains these results? A Electrons …
- Question 9
How many electrons are used in covalent bonding in the N2 molecule? …
- Question 10
Propene, CH3CH=CH2, has a very low boiling point because of the weakness of the A C–C bond. B C=C bond. C C–H bond. D intermolecular forces.
- Question 11
What is the empirical formula of a compound containing 12 g of carbon, 2 g of hydrogen and 16 g of oxygen only? A CHO B CHO2 C CH2O D C2HO
- Question 12
What is the correct equation for the reaction taking place at the negative electrode when molten magnesium chloride is electrolysed using inert electrodes? A Cl – → Cl …
- Question 13
Which fertiliser contains the greatest percentage by mass of nitrogen? A (NH4)2HPO4 Mr …
- Question 14
A volume of ethane, C2H6, at r.t.p. has a mass of 20 g. What is the mass of an equal volume of propene, C3H6, at …
- Question 15
Which of these processes are both endothermic? A combustion, cracking B combustion, fermentation C cracking, photosynthesis D fermentation, photosynthesis
- Question 16
Ethanol is produced by the fermentation of glucose from sugar cane. In some countries ethanol is used as a fuel. Which statements are correct? 1 Sugar cane is a non-renewable (finite) resource. 2 When sugar cane is growing it removes …
- Question 17
Which row correctly classifies the oxides in the table? carbon dioxide copper(II) oxide zinc oxide A acidic amphoteric basic B acidic basic amphoteric C acidic neutral amphoteric D basic neutral neutral
- Question 18
Sulfur is burnt in air. Which statement about this reaction is correct? A The gas formed turns aqueous potassium dichromate(VI) from green to orange. B The product is used as a food preservative. C The reaction is endothermic. D The …
- Question 19
Which method is used to obtain chlorine from aqueous sodium chloride? A crystallisation B distillation C electrolysis D filtration
- Question 20
The equation shows the reaction for the formation of sulfur trioxide using a catalyst. 2SO2(g) + O2(g) 2SO3(g) …
- Question 21
How many of these salts are soluble in water? AgCl Ca(NO3)2 (NH4)2SO4 PbCO3 …
- Question 22
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 23
Which statements about fertilisers containing nitrates are correct? 1 They increase plant growth. 2 Nitrates dissolve in water. 3 Eutrophication is caused by nitrates from farmland entering rivers. 4 If nitrates are applied to alkaline soils they produce ammonia gas. …
- Question 24
Which is a property of the element molybdenum, Mo? …
- Question 25
In the Periodic Table, how many periods are needed to accommodate the elements of atomic numbers …
- Question 26
The diagram shows the arrangement of electrons in the atoms of four different elements. Which is the least reactive of the four elements? …
- Question 27
A gas G 1 has no smell, 2 is not poisonous, 3 reacts with hydrogen at high temperature and pressure. What is gas G? A carbon monoxide B helium C nitrogen D chlorine
- Question 28
Substance P reacts with dilute hydrochloric acid to produce a gas. This gas reduces substance Q. dilute hydrochloric acid P heat Q What are substances P and …
- Question 29
Iron rusts when exposed to oxygen in the presence of water. Which method will not slow down the rate of rusting of an iron roof? A attaching strips of copper to it B coating it with plastic C galvanising it …
- Question 30
The solid carbonates of three metals, W, X and Y, are heated. result carbonate of W carbon dioxide given off solid changes colour from green to black carbonate of X carbon dioxide given off solid does not change colour carbonate …
- Question 31
Bond breaking is an endothermic process and bond making is an exothermic process. For which change is it not possible, from the equation, to deduce whether the reaction is endothermic or exothermic? A Cl 2(g) → 2Cl …
- Question 32
Which row is correct for the reaction of the alkene with steam and a catalyst? alkene product A CH3CH=CH2 CH3CH(OH)CH3 only B CH3CH2CH=CH2 CH3CH2CH2CH2OH only C CH3CH=CHCH3 CH3CH(OH)CH2CH3 only D (CH3)2C=CH2 (CH3)2CHCH2OH only
- Question 33
Why is carbon used in water purification? A It acts as a filter to remove insoluble solids. B It desalinates the water. C It disinfects the water. D It removes tastes and odours.
- Question 34
Which of the statements about the preparation and properties of ammonia is correct? A Ammonia is formed when ammonium chloride is heated with an acid. B Ammonia reacts with sodium hydroxide solution to form a salt and water. C Ammonia …
- Question 35
Which structure represents that of an alloy? …
- Question 36
Which statement is not correct? A Carbohydrates, proteins and fats are all natural macromolecules. B Terylene contains the same linkages as a protein. C When a carbohydrate is hydrolysed, sugars are formed. D When a protein is hydrolysed, amino acids …
- Question 37
Which statements would be true of the compound which has the formula shown? …
- Question 38
When butene reacts with bromine, which compound could be made? …
- Question 39
Methane is the first member of the alkane series of hydrocarbons. The second member is ethane. Which statements about ethane are correct? 1 Ethane has the formula C2H4. 2 Ethane has a higher boiling point than that of methane. 3 …
- Question 40
When ethanol reacts with ethanoic acid, the ester ethyl ethanoate is formed. C2H5OH + CH3CO2H → CH3CO2C2H5 + H2O What is the formula of the ester formed when methanol reacts with butanoic acid, C3H7CO2H? A C2H5CO2C2H5 B C3H7CO2C2H5 C CH3CO2C3H7 …
Other Chemistry papers from Oct/Nov 2014
- 5070/11 Multiple choice
- 5070/21 Theory
- 5070/22 Theory
- 5070/41 Alternative to Practical
- 5070/42 Alternative to Practical