Cambridge O Level · 5070 · Paper 1 · Multiple choice
Chemistry 5070/11 May/June 2023 past paper
Cambridge O Level Chemistry (5070) Paper 1 (Multiple choice), variant 1, May/June 2023: the question paper and its official mark scheme, 40 questions worth 40 marks, with the grade thresholds. Free to open, no account needed.
- Questions
- 40
- Marks
- 40
- Grade A from
- 25
File names: 5070_s23_qp_11 · 5070_s23_ms_11
Grade thresholds for 5070/11 May/June 2023
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 |
|---|---|---|---|---|
| 25 | 20 | 14 | 12 | 11 |
Topics in this paper
Which syllabus chapters 5070/11 May/June 2023 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 5070/11 May/June 2023
- Question 1
In a change of state at constant temperature and pressure: ● energy is released as stronger forces of attraction form between the particles ● the average distance between the particles changes very little. Which change of state is being described? …
- Question 2
X, Y and Z are elements. X and Y are in the same period of the Periodic Table. Y and Z are in the same group of the Periodic Table. What are possible electronic configurations for X, Y and …
- Question 3
The numbers of electrons, protons and neutrons in four different particles are shown. particle electrons protons neutrons …
- Question 4
Some statements about the bonding in magnesium chloride are listed. 1 Each magnesium atom donates two electrons; each chlorine atom accepts one electron. 2 Chlorine forms an ion with a 2– charge. 3 Magnesium atoms and chlorine atoms share electrons. …
- Question 5
Ethane, C2H6, and ammonia, NH3, are covalent compounds. The dot-and-cross diagrams of these compounds are shown. …
- Question 6
When a strip of copper is placed in aqueous silver nitrate, a displacement reaction takes place. What is the ionic equation for the reaction which takes place? A Ag+(aq) + Cu(s) Ag(s) + Cu2+(aq) …
- Question 7
Three compounds are listed. ● calcium carbonate ● potassium sulfate ● zinc nitrate Which row shows the element present in the greatest percentage by mass in each compound? [Ar: Ca, …
- Question 8
Two aqueous solutions, Q and R, have the same concentration in mol / dm3. Solution Q contains 4.0 g of NaOH in 500 cm3 of solution. Which solution could be solution R? [Ar: Na, …
- Question 9
Samples of two hydrated compounds are weighed and then dehydrated by heating. The anhydrous compounds are weighed and the results are shown. 3.97 g FeSO4•xH2O gives 2.17 g anhydrous FeSO4. 2.88 g CaSO4•yH2O gives 2.27 g anhydrous CaSO4. What are …
- Question 10
What has a mass equal to the mass of one mole of water? A 24 dm3 of water at room temperature and pressure B one mole of steam at 200 C and 100 kPa / 1 atm pressure C one …
- Question 11
Concentrated aqueous sodium chloride is electrolysed using inert electrodes. Which row shows what happens in this electrolysis and why it happens? change occurring explanation A oxygen is discharged at the anode OH–(aq) loses electrons more easily than Cl –(aq) B …
- Question 12
Which statements about the energy changes during a chemical reaction are correct? 1 The activation energy, Ea, is the maximum energy the colliding particles must have in order to react. 2 During an endothermic reaction, thermal energy is taken in …
- Question 13
Two gases react inside a sealed vessel. Which change in conditions would increase the rate of reaction? 1 increasing the pressure inside the vessel 2 increasing the temperature inside the vessel 3 increasing the volume of the vessel …
- Question 14
Catalysts change 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 15
The equation for a reaction in the Contact process is shown. 2SO2(g) + O2(g) 2SO3(g) …
- Question 16
Universal indicator contains several dyes. The reversible reaction of one dye, IndOH, is shown. IndOH(aq) + H+(aq) Ind+(aq) + H2O(l) colour X colour Y A few drops of universal indicator solution are added to 50 cm3 of water. A few …
- Question 17
The combustion of methane is a redox reaction. CH4 …
- Question 18
Which method of preparation of magnesium sulfate is an example of a redox reaction? A Mg + H2SO4 MgSO4 …
- Question 19
Samples of HCl (aq) and HNO3(aq) are tested using universal indicator paper. The sample of HCl (aq) has a pH of 4 and the sample of HNO3(aq) has a pH of 2. Which statement is correct? A HCl (aq) is …
- Question 20
Which two substances react to form a salt and water only? A aqueous sodium carbonate and dilute sulfuric acid B aqueous sodium chloride and aqueous silver nitrate C aqueous sodium hydroxide and dilute ethanoic acid D zinc and dilute hydrochloric …
- Question 21
The elements are arranged in groups and periods in the Periodic Table. Which row is correct? group determined by period determined by elements in the Periodic Table are arranged by A the number of electrons in the outer shell the …
- Question 22
Sodium, potassium and rubidium are in Group I of the Periodic Table. Chlorine, bromine and iodine are in Group VII. Which statement is correct? A Bromine displaces chlorine from an aqueous solution of sodium chloride. B Iodine is discharged at …
- Question 23
Which statement about transition elements and their compounds is correct? A Copper(II) oxide catalyses the conversion of sulfuric acid to copper(II) sulfate. B Iron allows hydrogen and nitrogen to react at a lower temperature. C Nickel increases the rate of …
- Question 24
Three statements about the properties of metals are shown. 1 All metals conduct electricity. 2 All metals have two electrons in their innermost shell. 3 All metals have high melting points. Which statements are correct? A 1 and 2 only …
- Question 25
Which statements about metals and their uses are correct? 1 Aluminium is used to make overhead electrical cables because it has a low density. 2 Aluminium is used to make food containers because it is resistant to corrosion. 3 Copper …
- Question 26
Stainless steel is an alloy. It contains iron and more than one other element. Which elements other than iron are commonly used in stainless steel? A copper and chromium B copper and nickel C nickel and carbon D zinc and …
- Question 27
The equations for some of the reactions of metals Q, R and T are shown. 2QNO3(aq) + Cu(s) …
- Question 28
Zinc is used to galvanise iron, which prevents the iron from rusting. Which statements are correct? 1 The layer of zinc forms a barrier between the iron and the oxygen and water in the atmosphere. 2 Zinc will oxidise before …
- Question 29
Three statements about the extraction of aluminium are shown. 1 The electrolyte is aluminium oxide dissolved in molten cryolite. 2 Carbon is used for both the cathode and the anode. 3 Carbon dioxide is given off at the cathode. Which …
- Question 30
What is a cause of deoxygenation of water in a lake? A acid rain B excess calcium hydroxide C insoluble nitrates D soluble fertilisers
- Question 31
Dissolved substances can cause eutrophication and the deoxygenation of water. How many of the ions shown cause this effect? Cl – CO3 2– Na+ NO3 – PO4 …
- Question 32
Which statement about global warming is correct? A Methane produced by digestion in animals has no effect on the rate of global warming. B The products of burning fossil fuels have no effect on the rate of global warming. C …
- Question 33
The structures of three compounds, W, X and Y, are shown. C W OH OH CH3 CH3 X CH3 CH2 COOH …
- Question 34
What is the displayed formula of propyl methanoate? …
- Question 35
The table shows some of the fractions obtained by the fractional distillation of petroleum and their uses. fraction use 1 bitumen making roads 2 kerosene / paraffin chemical feedstock 3 naphtha jet fuel 4 refinery gases heating and cooking Which …
- Question 36
Which equation shows the reaction of ethane with chlorine in the presence of ultraviolet light? …
- Question 37
Hexan-3-ol is an alcohol. CH3 CH2 CH OH CH2 CH2 CH3 hexan-3-ol How many molecules of oxygen are needed for the complete combustion of one molecule of hexan-3-ol? …
- Question 38
An organic compound, P, is dissolved in water. The concentration of the solution is 0.1 mol / dm3 and the pH is 3. A solid is added to the solution and effervescence is seen. Which equation could represent this reaction? …
- Question 39
A paper chromatography experiment is used to find an Rf value for Fe3+(aq). The chromatogram is shown. solvent front starting line y x Fe3+ To make the spot containing Fe3+(aq) more visible, the paper is sprayed with aqueous sodium hydroxide …
- Question 40
A laboratory has a powdered mixture of solid iodine and solid carbon. Iodine is very soluble in hexane and slightly soluble in water. Carbon is insoluble in both solvents. One sample of the mixture is shaken with hexane. This is …
Other Chemistry papers from May/June 2023
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