Cambridge O Level · 5070 · Paper 1 · Multiple choice
Chemistry 5070/11 May/June 2026 past paper
Cambridge O Level Chemistry (5070) Paper 1 (Multiple choice), variant 1, May/June 2026: the question paper and its official mark scheme, 40 questions worth 40 marks. Free to open, no account needed.
- Questions
- 40
- Marks
- 40
File names: 5070_s26_qp_11 · 5070_s26_ms_11
Topics in this paper
Which syllabus chapters 5070/11 May/June 2026 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 5070/11 May/June 2026
- Question 1
A gas occupies a volume of 2.0dm3 at room temperature and pressure. Which changes in the conditions would both decrease the volume occupied by the gas? 1 pressure temperature decreased decreased A decreased increased B increased decreased C increased increased …
- Question 2
In the diagrams, atoms of different elements are represented by different sizes of circle. Which diagram represents a mixture of nitrogen and argon? …
- Question 3
The difference between the nucleon number and the proton number indicates the number of 1 in the atom. Atoms that have different nucleon numbers but the same proton number are called 2 . Which words correctly complete gaps 1 and …
- Question 4
The diagram shows the relative mass and the relative charge of two particles present in atoms and ions. …
- Question 5
Which diagram represents magnesium oxide? …
- Question 6
Three statements about graphite and diamond are listed. 6 1 Graphite and diamond both have giant covalent structures. 2 Graphite is used as a lubricant; diamond is not used as a lubricant. 3 Graphite is used to make electrodes; diamond …
- Question 7
Solid element X consists of a lattice of ions surrounded by a ‘sea’ of delocalised electrons. Which row is correct? 7 the charges on the ions are X is negative a metal A positive a metal B negative a non-metal …
- Question 8
Which definition of the empirical formula of a compound is correct? 8 the number and type of different atoms or ions in one mole of the compound A the number of different atoms or ions in one mole of the …
- Question 9
Hydrated magnesium sulfate has the formula MgSO4•7H2O. [Ar: Mg, …
- Question 10
A 3.00g sample of copper ore containing copper(II) carbonate, CuCO3, and inert rock is heated until there is no change in mass. When cool, the residue weighs 2.20g. The equation shows the decomposition of the carbonate. CuCO3 →CuO + CO2 …
- Question 11
A compound contains 40.0% carbon, 6.7% hydrogen and 53.3% oxygen by mass. The relative molecular mass of the compound is between 55 and 65. What is the molecular formula of the compound? …
- Question 12
Molten sodium chloride is electrolysed. Which change occurs at the cathode? 12 Sodium ions are oxidised. A Sodium ions are reduced. B Chloride ions are oxidised. C Chloride ions are reduced. D
- Question 13
Three statements about hydrogen–oxygen fuel cells are listed. 13 1 They produce less carbon dioxide than petrol engines. 2 They produce hydrogen and oxygen as the only chemical products. 3 They are used to generate electricity. Which statements are correct? …
- Question 14
Some bond energies are given in the table. 14 bond energy in kJ/mol bond …
- Question 15
A student investigates the rate of reaction between magnesium and excess dilute hydrochloric acid by doing three experiments. The student measures the volume of hydrogen gas produced at regular intervals. The results of the three experiments are shown. 15 volume …
- Question 16
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? 16 1 adding more …
- Question 17
The Haber process is used to make ammonia. Which catalyst is used in the Haber process? 17 iron A nickel B platinum C vanadium(V) oxide D
- Question 18
Copper(II) hydroxide is insoluble in water. Rubidium hydroxide is soluble in water. Which row describes copper(II) hydroxide and rubidium hydroxide? 18 rubidium hydroxide copper(II) hydroxide a base and an alkali neither a base nor an alkali A an alkali but …
- Question 19
Which ion is present in dilute aqueous propanoic acid? 19 CH3CH2COO+ A CH3CH2CH2COO– …
- Question 20
Caesium is an element in Group I and Period 6 of the Periodic Table. Which statement is correct? 20 Caesium is more dense than lithium. A Caesium reacts with water to produce a solution with a pH less than 7. …
- Question 21
Aqueous bromine is added to aqueous potassium iodide. Which colour is the aqueous bromine and what is the final colour of the reaction mixture? 21 final colour of reaction mixture colour of aqueous bromine orange colourless A brown colourless B …
- Question 22
Properties of four elements are listed. Only one of the elements is a transition element. Which element is the transition element? 22 colour of the element acts as a catalyst as the element or in a compound melting point /°C …
- Question 23
A student makes three statements about the elements in Group VIII of the Periodic Table. 23 1 Their atoms all have eight electrons in the outer shell. 2 Their molecules are covalently bonded. 3 They all have a boiling point …
- Question 24
Which statement about aluminium is correct? 24 It is used in the electrical wiring of houses because of its high resistance to corrosion and poor electrical conductivity. A It is used in the manufacture of aircraft because of its high …
- Question 25
Which statement is correct? 25 Copper displaces magnesium from aqueous magnesium sulfate. A Carbon reacts with magnesium oxide; carbon dioxide is one product of this reaction. B Iron displaces silver from aqueous silver nitrate. C Hydrogen reacts with zinc oxide; …
- Question 26
The diagram shows how an underwater iron pipe can be protected from rusting. 26 metal Z iron pipe water Metal Z can be 1 because it is 2 reactive than iron. Which words correctly complete gaps 1 and …
- Question 27
Process 1: Iron is extracted from hematite in a blast furnace. Process 2: Aluminium is extracted from purified bauxite in an electrolytic cell. Which statements are correct for both processes? 27 1 An oxide in the ore is reduced. 2 …
- Question 28
A solution of sodium chloride in water is tested with anhydrous copper(II) sulfate and anhydrous cobalt(II) chloride. The boiling point of the solution at 1atm pressure is also measured. Which row is correct? 28 boiling point /°C colour change with …
- Question 29
NPK fertilisers are used to provide three elements for improved plant growth. Which mixture of compounds contains all three of these elements? 29 ammonium nitrate and calcium phosphate A calcium phosphate and potassium sulfate B potassium nitrate and calcium phosphate …
- Question 30
Which row about carbon dioxide and methane is correct? 30 both lower the pH of water when they dissolve in it both are greenhouse gases both contain carbon …
- Question 31
The structural formulae of three compounds are listed. 31 1 CH3COOH 2 HCOOCH3 3 CH3CH2OH Which compounds are carboxylic acids? 2 and 3 only D 1 only C 1 and 2 only …
- Question 32
A hydrocarbon, Q, has molecular formula CxHy. Q reacts with hydrogen to form a single product with molecular formula CxHy+2. Which statement about Q is correct? 32 Q does not burn in air. A Q is a saturated hydrocarbon. B …
- Question 33
Propane is an alkane that can react with chlorine. Which statement is correct? 33 Two of the products of the reaction between propane and chlorine have the molecular formula C3H7Cl. A Each carbon atom in a propane molecule has only …
- Question 34
How can alkenes be manufactured? 34 by polymerisation reactions A by the addition of hydrogen to unsaturated vegetable oils B by the combustion of alkanes C by the cracking of hydrocarbons D
- Question 35
The displayed formula of an ester is shown. …
- Question 36
Nylon and poly(ethene) are formed by polymerisation reactions. Which other products, if any, are formed during the two polymerisation reactions? 36 other product formed with poly(ethene) other product formed with nylon none none A water none B none water C …
- Question 37
Solution X is made by adding solid glucose to liquid ethanol in a beaker. This mixture is stirred. After stirring, solid glucose is visible at the bottom of the beaker. The amount of solid glucose present is not changed by …
- Question 38
Which piece of apparatus is used to add one reagent to another reagent during a titration? 38 burette A conical flask B measuring cylinder C volumetric pipette …
- Question 39
Chromatography is used to separate and identify dyes in a mixture. Which statement is correct? 39 A dye can have an Rf value of …
- Question 40
J is an aqueous solution. When aqueous sodium hydroxide is added to J, a green precipitate is formed. The resulting mixture is heated, and no gas is formed. Aluminium foil is added to the warmed mixture. A gas is formed …
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