Cambridge O Level · 5070 · Paper 1 · Multiple choice
Chemistry 5070/11 Oct/Nov 2024 past paper
Cambridge O Level Chemistry (5070) Paper 1 (Multiple choice), variant 1, Oct/Nov 2024: 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
- 29
File names: 5070_w24_qp_11 · 5070_w24_ms_11
Grade thresholds for 5070/11 Oct/Nov 2024
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 | 23 | 17 | 15 | 13 |
Topics in this paper
Which syllabus chapters 5070/11 Oct/Nov 2024 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 5070/11 Oct/Nov 2024
- Question 1
Which row shows both a property of a gas and the correct explanation for this property? property explanation for the property A Gases flow easily. The bonds within the molecules are weak. B The pressure of a sample of gas …
- Question 2
When measured under the same conditions of temperature and pressure, which gas diffuses at the same rate as nitrogen? A ammonia, NH3 B carbon monoxide, CO C ethane, C2H6 D oxygen, O2
- Question 3
X and Y are both elements, one of which is a non-metal. 1 mole of X is added to 1 mole of Y and they are heated together. X and Y react completely to form substance Z. Substance Z cannot …
- Question 4
An ion has an electronic configuration of 2,8,8. It has a 2– charge and a nucleon number of 36. How many neutrons are present in the nucleus of this ion? …
- Question 5
The formulae for two ions are given. …
- Question 6
Which pair of molecules have the same number of electrons in covalent bonds? A CH3OH and C2H4 B CO2 and H2O C NH3 and …
- Question 7
Chrome alum is a salt that contains two different cations and one anion. The ions present in chrome alum are K+, Cr3+ and SO4 2–. What is the formula of the salt? A KCrSO4 B KCr(SO4)2 C KCr(SO4)3 D K2Cr(SO4)3
- Question 8
The table gives some information about barium and chlorine. relative atomic mass group in Periodic Table barium 137 II chlorine 35.5 VII Using this information only, a student makes three statements. 1 There is more than one isotope of chlorine. …
- Question 9
Which mass of carbon contains the same number of atoms as 16.0 g of sulfur? …
- Question 10
Compound X contains carbon, hydrogen and oxygen only. It has an Mr of …
- Question 11
Aqueous copper(II) sulfate is electrolysed using copper electrodes. Which row describes the changes that take place during the electrolysis? mass of anode mass of cathode colour of solution A increases decreases becomes paler B increases decreases stays the same C …
- Question 12
Which row describes one advantage and one disadvantage of using a hydrogen-oxygen fuel cell to power a road vehicle? advantage disadvantage A The fuel cell obtains the oxygen from the air. The hydrogen has to be stored in a very …
- Question 13
Which statement about exothermic and endothermic reactions is correct? A In an endothermic reaction, energy is used to break bonds but no energy is released when bonds form. B In an endothermic reaction, energy is released when bonds form but …
- Question 14
Two gases react together to produce a single product. The rate of the reaction is affected by an increase in pressure. The reaction is catalysed by platinum. Which row describes one effect on this reaction of increasing pressure and one …
- Question 15
Calcium carbonate reacts with excess dilute hydrochloric acid to form carbon dioxide. The reaction is investigated in two experiments. The rate of the reactions is compared by measuring the volume of carbon dioxide formed over time in each experiment. The …
- Question 16
If calcium carbonate is heated in a closed container, it will decompose, forming calcium oxide and carbon dioxide. Calcium oxide and carbon dioxide can recombine to form calcium carbonate. After some time, a position is reached where calcium carbonate is …
- Question 17
Which set of conditions is used in the Contact process? temperature / C pressure / atm catalyst …
- Question 18
Copper forms a red oxide, Cu2O, and a black oxide, CuO. In the presence of a catalyst, aqueous hydrogen peroxide, H2O2, decomposes to form water. The black oxide has copper in a 1 oxidation state than in the red oxide. …
- Question 19
An organic compound, X, has a molecular formula C4H8O2 and turns damp blue litmus paper red. What is the displayed formula of …
- Question 20
Which statement about oxides is correct? A All acidic oxides are gases at room temperature. B All basic oxides dissolve in water to give alkalis. C Amphoteric oxides react with acids, alkalis and water. D Potassium oxide is a basic …
- Question 21
A student is provided with suitable apparatus, distilled water and the following reagents. solid magnesium hydroxide solid lead carbonate dilute nitric acid aqueous sodium chloride aqueous sodium sulfate Which salts can the student prepare as a pure dry sample? A …
- Question 22
When heated, copper(II) sulfate crystals, CuSO4•5H2O, react as shown. CuSO4•5H2O(s) CuSO4(s) + 5H2O(g) When 1 copper(II) sulfate, which is 2 in appearance, is heated, it forms 3 copper(II) sulfate, which is 4 in appearance. Which words correctly complete gaps …
- Question 23
Which formula represents the oxide of element Z in Group II of the Periodic Table? A ZO …
- Question 24
Element X is in Group I. Some statements about element X are given. ● X is not the least dense element in Group …
- Question 25
A student makes three statements about metals and non-metals. 1 All alloys contain at least one metal. 2 All metals are good thermal and electrical conductors. 3 All solid non-metals are malleable. Which statements are correct? …
- Question 26
Group I elements and transition elements are metals. Student X suggests that the Group I elements are above hydrogen in the reactivity series but that not all transition elements are above hydrogen. Student Y suggests that the densities of Group …
- Question 27
The equations for three reactions are given. …
- Question 28
The domestic water supply is treated to make it safe to drink. Which row identifies the treatment and its effect? chlorination filtration sedimentation A removes nitrates removes solids removes nitrates B kills microbes removes soluble compounds removes solids C removes …
- Question 29
Sodium phosphate, Na3PO4, and ammonium nitrate, NH4NO3, are both used as fertilisers. Which row shows the correct percentage by mass of the element in each compound that improves plant growth? % of the element in Na3PO4 that improves plant growth …
- Question 30
Three processes are shown. 1 the decomposition of vegetation 2 emissions from a car engine 3 photosynthesis Which row shows a gas produced in each process? process 1 process 2 process 3 A carbon monoxide hydrogen oxygen B carbon monoxide …
- Question 31
Which compound is not an alkane, alkene, alcohol or carboxylic acid? …
- Question 32
Alkenes can be produced by the cracking of alkanes, such as decane, C10H22. Which equation shows the cracking of decane to produce two different alkenes and at least one other product? …
- Question 33
Alkenes undergo addition reactions with bromine to form dibromoalkanes. Which statement is correct? A Ethene and bromine react to produce 1,1-dibromoethane. B Propene and bromine react to produce 1,3-dibromopropane. C But-2-ene and bromine react to produce 2,2-dibromobutane. D But-1-ene and …
- Question 34
How many moles of oxygen are required for the complete combustion of 2 moles of ethanol? …
- Question 35
Two reactions are shown. reaction 1 CH2CH=CH2OH + H2 compound X Ni reaction 2 compound X compound Y KMnO4(aq) acidified Which row is correct? name of compound X type of compound Y A propan-1-ol carboxylic acid B propan-1-ol ester C …
- Question 36
A section of the structure of a protein is shown. …
- Question 37
Which piece of apparatus is used to measure exactly 27.3 cm3 of a liquid? A a burette B a condenser C a measuring cylinder D a volumetric pipette
- Question 38
A student titrates aqueous sodium hydroxide with 0.1 mol / dm3 hydrochloric acid. The titration results are used to calculate the concentration of the aqueous sodium hydroxide. Which row is correct? apparatus to measure the volume of dilute hydrochloric acid …
- Question 39
A mixture of four coloured dyes is analysed by chromatography. The result is shown. solvent front baseline Which change allows the four coloured dyes to be seen separately? A Measure the Rf values of the spots carefully. B Run the …
- Question 40
An aqueous solution contains cations of metal X. A precipitate forms when a few drops of aqueous sodium hydroxide are added to the solution. The precipitate dissolves in excess aqueous sodium hydroxide. What is a possible identity of metal X? …
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