Cambridge O Level · 5070 · Paper 1 · Multiple choice
Chemistry 5070/12 Oct/Nov 2019 past paper
Cambridge O Level Chemistry (5070) Paper 1 (Multiple choice), variant 2, Oct/Nov 2019: 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
- 28
File names: 5070_w19_qp_12 · 5070_w19_ms_12
Grade thresholds for 5070/12 Oct/Nov 2019
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 |
|---|---|---|---|---|
| 28 | 22 | 17 | 15 | 13 |
Topics in this paper
Which syllabus chapters 5070/12 Oct/Nov 2019 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 5070/12 Oct/Nov 2019
- Question 1
The concentration of aqueous sodium carbonate can be found by reaction with hydrochloric acid of known concentration. The indicator methyl orange is used. Which items of equipment are needed? A burette, measuring cylinder, gas syringe B burette, measuring cylinder, thermometer …
- Question 2
The diagrams show three stages, 1, 2 and 3, used in the preparation of a salt. heat filtrate reactants spatula residue filtrate …
- Question 3
The nucleon number of an atom is typically greater than its proton number. The difference between these two numbers indicates the number of 1 in the atom. Atoms that have different nucleon numbers but the same proton number are called …
- Question 4
Which three elements exist as diatomic molecules at room temperature? A hydrogen, oxygen, helium B nitrogen, chlorine, neon C nitrogen, oxygen, fluorine D oxygen, chlorine, helium
- Question 5
Which is a pure compound? A dry air B ethanol C steel D petrol (gasoline)
- Question 6
Which diagram best represents the structure of a solid metal? …
- Question 7
Hydrogen sulfide burns in an excess of oxygen according to the equation shown. …
- Question 8
Which statement about electrical conductivity is correct? A Covalent compounds, such as glucose, conduct when molten or dissolved in water. B Dilute acids, such as sulfuric acid, conduct because all the ions are free to move. C Ionic compounds, such …
- Question 9
Ammonia is manufactured from nitrogen and hydrogen by the Haber process. …
- Question 10
What is the ratio of the number of molecules in 71 g of gaseous chlorine to the number of molecules in 2 g of gaseous hydrogen? …
- Question 11
The diagram shows the apparatus for an electrolysis experiment. inert electrodes electrolyte Using the apparatus shown, which electrolyte would give colourless gases at both electrodes? A aqueous copper(II) sulfate B concentrated aqueous sodium chloride C dilute sulfuric acid D molten …
- Question 12
Which metal is most likely to be extracted from its molten chloride by the use of electrolysis? A calcium B copper C iron D silver
- Question 13
Two energy profile diagrams are shown. The scale on the y-axis is the same for both diagrams. reaction 1 progress of reaction energy reactants products reaction 2 progress of reaction energy reactants products Which statement is correct? A Both reactions …
- Question 14
Ammonium nitrate dissolves in water. H2O NH4NO3(s) NH4NO3(aq) …
- Question 15
Which statement about photosynthesis is correct? A Chlorophyll is a reactant. B Oxygen is a product. C Sunlight is a reactant. D Water is a product.
- Question 16
In which reaction is the underlined substance reduced? …
- Question 17
Catalysts alter the rate of chemical reactions. Which statements correctly describe the effect of adding a catalyst to a reaction? 1 All reactant particles have more energy and move faster. 2 The activation energy is lowered. 3 More reactant particles …
- Question 18
Solution T has the following properties. 1 It reacts with magnesium forming a gas. 2 It reacts with calcium carbonate forming a gas. Which statement about solution T is correct? A It contains more OH– ions than H+ ions. B …
- Question 19
Which substance is soluble in water? A copper(II) carbonate B copper(II) oxide C copper(II) hydroxide D copper(II) nitrate
- Question 20
Which statement about ammonia is correct? A It is a colourless, odourless gas. B It is a gas that turns damp blue litmus paper red. C It is formed when potassium nitrate is heated with aqueous sodium hydroxide and aluminium. …
- Question 21
Part of the Periodic Table is shown with four elements, …
- Question 22
The elements in Group I have similar chemical properties. Which statement explains why this is true? A They all have metallic bonding. B They all have the same number of complete electron shells. C They all have the same number …
- Question 23
Helium and xenon are both noble gases. What is true of both elements? they are chemically inert the atoms have eight electrons in their outer shell …
- Question 24
The ions of metal X react with aqueous potassium iodide. 2X2+(aq) + 4I–(aq) → 2XI(s) + I2(aq) coloured From this information, it can be deduced that X is most likely a 1 metal and the X2+(aq) ions are 2 . …
- Question 25
Which substance is a metal? melting point conducts electricity when solid conducts electricity when molten A high …
- Question 26
Which metal can be obtained from its oxide by using either carbon or hydrogen? A Cu B Fe C Mg D Zn
- Question 27
Metal carbonates decompose when heated. Which carbonate is most stable to heat? A calcium carbonate B copper(II) carbonate C lead(II) carbonate D zinc carbonate
- Question 28
Iron is extracted from its ore in a blast furnace. Coke and limestone are also added to the blast furnace. What is the purpose of the limestone? A to decompose to release oxygen to burn the coke B to decompose …
- Question 29
Aluminium is extracted from aluminium oxide by electrolysis. waste gases carbon cathode carbon anodes purified aluminium oxide dissolved in molten cryolite molten aluminium Which statement about this electrolysis is correct? A Aluminium ions gain electrons to form aluminium. B Cryolite …
- Question 30
Steel is produced by blowing oxygen into impure molten iron. A student suggests two reasons why this process is carried out. 1 The oxygen removes some of the carbon from the impure iron. 2 The oxygen oxidises iron(II) ions to …
- Question 31
Z is a pollutant gas that is formed in internal combustion engines. An aqueous solution of Z is acidic. Z is removed from the exhaust gases in a catalytic converter by reduction. What is Z? A CO …
- Question 32
A student investigates the properties of a colourless organic liquid. Which observation shows that the liquid is unsaturated? A It decolourises aqueous bromine. B It has a sweet smell. C It is a good solvent for organic compounds. D It …
- Question 33
Alkanes are saturated compounds containing carbon and hydrogen only. Structures …
- Question 34
When butene reacts with bromine, which compound could be made? …
- Question 35
Which statement about propene is correct? A It can be formed by cracking butane. B It has the formula C3H8. C It is a saturated hydrocarbon. D It reacts with hydrogen to form ethane.
- Question 36
Which term describes the structure of Terylene? A polyalkene B polyamide C polyester D protein
- Question 37
Which process is involved in the formation of ethanol from ethene? A addition B combustion C polymerisation D substitution
- Question 38
Which compound is an alcohol? …
- Question 39
Which two compounds react together to form CH3CH2COOCH3? A ethanoic acid and ethanol B methanoic acid and ethanol C methanoic acid and propanol D propanoic acid and methanol
- Question 40
Which compound might be suitable to flavour a soft drink? A CH3CH2CH2COOCH3 B CH3CH2CH2CH2CH2OH C CH3CH2CH2CH2COOH D CH3CHCHCH2CH3 Group The Periodic Table of Elements 1 H hydrogen 1 2 He helium 4 I II III IV V VI VII VIII …
Other Chemistry papers from Oct/Nov 2019
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