Cambridge O Level · 5070 · Paper 1 · Multiple choice
Chemistry 5070/11 Oct/Nov 2023 past paper
Cambridge O Level Chemistry (5070) Paper 1 (Multiple choice), variant 1, Oct/Nov 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
- 24
File names: 5070_w23_qp_11 · 5070_w23_ms_11
Grade thresholds for 5070/11 Oct/Nov 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 |
|---|---|---|---|---|
| 24 | 19 | 15 | 13 | 12 |
Topics in this paper
Which syllabus chapters 5070/11 Oct/Nov 2023 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 5070/11 Oct/Nov 2023
- Question 1
In which changes do the particles move further apart? 1 A gas is heated from 0 C to …
- Question 2
Data about two compounds is given. Both compounds have a simple molecular structure. compound melting point / C boiling point …
- Question 3
Substances can be elements, compounds or mixtures. Which row is correct? element compound mixture A copper brass zinc B methane carbon petroleum C nitrogen carbon dioxide water vapour D oxygen glucose air
- Question 4
The letters X, Y and Z represent different atoms. …
- Question 5
A student makes three statements. 1 Calcium ions have a 2+ charge and oxide ions have a 2– charge. 2 Magnesium ions and oxide ions have the same electronic configuration as neon. 3 Calcium ions have three full electron shells …
- Question 6
Four statements about graphite, diamond and silicon(IV) oxide are listed. 1 Diamond and silicon(IV) oxide are both very hard and have similar structures. 2 In diamond, each carbon atom is joined to four other carbon atoms. 3 Silicon(IV) oxide forms …
- Question 7
Which row is correct? compound molecular formula A ammonia NH4 B ethene C2H6 C methanol CH4O D propanoic acid C3H8O2
- Question 8
Compound Y is the only substance formed when 500 cm3 of ammonia reacts with 250 cm3 of carbon dioxide. All measurements are at r.t.p. What is the formula of Y? A (NH4)2CO3 B NH2COONH4 C (NH2)2CO D NH4COONH4
- Question 9
How many sodium ions are there in 30 g of sodium sulfate? …
- Question 10
Three compounds are listed. copper(II) nitrate, Cu(NO3)2 zinc sulfate, ZnSO4 sodium thiosulfate, Na2S2O3 Which row shows the element that is present in the greatest percentage by mass in each compound? [relative formula masses, Mr: Cu(NO3)2, 188; ZnSO4, 161; Na2S2O3, 158] …
- Question 11
The complete combustion of 20 cm3 of a gaseous alkane, X, requires 130 cm3 of oxygen. Both volumes are measured at r.t.p. What could be the identity of X? A butane B ethane C methane D propane
- Question 12
Aqueous copper(II) sulfate is electrolysed with copper electrodes. What is the equation for the reaction occurring at the anode? A Cu Cu2+ …
- Question 13
Three statements about fuel cells are given. 1 A hydrogen-oxygen fuel cell requires a continuous input of fuel and oxygen. 2 In a hydrogen-oxygen fuel cell, hydrogen is burned in oxygen to produce electricity. 3 When a hydrogen-oxygen fuel cell …
- Question 14
Under certain conditions, nitrogen reacts with oxygen to form …
- Question 15
Hydrogen and bromine react to form hydrogen bromide. H2 + Br2 2HBr Bond energy data is given in the table. bond bond energy in kJ / mol H–H 436 Br–Br 193 H–Br 366 What is the enthalpy change, H, …
- Question 16
Octane, C8H18, is a hydrocarbon. When octane is mixed with an excess of oxygen, no change takes place unless energy is supplied. If energy is supplied, in the form of heat or an electric spark, a change takes place quickly. …
- Question 17
A student plans to investigate how the rate of the reaction changes when hydrochloric acid and calcium carbonate react. CaCO3(s) + 2HCl (aq) CaCl 2(aq) …
- Question 18
Aqueous bromine is an equilibrium mixture. Br2(aq) + H2O(l) OBr –(aq) + Br –(aq) + 2H+(aq) Aqueous bromine is orange in colour. The species on the right-hand side of the equation are colourless. Changes are made to three separate portions …
- Question 19
In which substance does the nitrogen atom have the same oxidation number as the nitrogen atom in HNO2? Assume the following oxidation numbers for the other elements in these compounds: …
- Question 20
Limewater is aqueous calcium hydroxide. Which statement about limewater is correct? A It has a pH below 7. B It gives a blue-green colour in the flame test. C It reacts with ammonia to form an ammonium salt. D It …
- Question 21
Which two oxides will both react with aqueous sodium hydroxide? A calcium oxide and copper(II) oxide B calcium oxide and zinc oxide C copper(II) oxide and sulfur dioxide D sulfur dioxide and zinc oxide
- Question 22
A solution of sodium carbonate is added to tap water. A white precipitate forms. Which ion present in the tap water causes the precipitate to form? A chloride B magnesium C potassium D sulfate
- Question 23
The characteristic properties of elements change from left to right across Period 2 of the Periodic Table. On the left of the period, the charge on the ion formed by an element is: 1 the same as the group number …
- Question 24
Which statement about the Group VII halogens is correct? A Bromine consists of Br2 molecules at room temperature and pressure. B Iodine will displace bromine from aqueous potassium bromide. C The halogens become darker in colour as the relative molecular …
- Question 25
A power cable requires an element that: 1 conducts electricity 2 has a relatively low density 3 is ductile. Which of these properties does aluminium have? …
- Question 26
Which diagram represents the structure of an alloy? …
- Question 27
Most metals react with oxygen in the air to form a metal oxide. Which metal forms a metal oxide layer that reduces its apparent reactivity? A aluminium B copper C iron D silver
- Question 28
Which statement about corrosion of metals is correct? A A barrier method is needed to prevent the corrosion of stainless steel. B Iron corrodes to produce hydrated iron(I) oxide. C Sacrificial protection uses a less reactive metal attached to the …
- Question 29
Some metals and the compounds in their ores are shown. metal Al Ca Pb Na Fe Mg compound in ore Al 2O3 CaCO3 PbS NaCl Fe2O3 MgCO3 Which type of reaction occurs in the extraction of each of these metals …
- Question 30
Which statement about natural sources of water and the domestic water supply is correct? A Chlorine is used to remove tastes and odours in the treatment of the domestic water supply. B Metal compounds from detergents can deoxygenate natural sources …
- Question 31
Gases that may be present in the air are listed. 1 neon 2 carbon monoxide 3 nitrogen 4 methane Which gases are atmospheric pollutants? A 1 and …
- Question 32
Which compounds are in the same homologous series? A CH3CH2CH2CH3, CH3CHCHCH3 and CH3CH(CH3)CH3 B CH2CHCH3, CH3CH2CHCH2 and CH2CHCH2CH3 C CH3CHOHCH3, CH3CH2CH2OH and CH3CH2COOH D CH3CH2CH3, CH3CH2CH2CH3 and CH2CHCH2CH2CH3
- Question 33
The diagrams show four structures of …
- Question 34
The displayed formulae of two organic compounds are shown. …
- Question 35
Two products of the separation of petroleum are the lubricating oil fraction and the kerosene / paraffin fraction. Which statement is correct? A The lubricating oil fraction is more viscous than the kerosene / paraffin fraction. B The lubricating oil …
- Question 36
An incomplete equation for the reaction of propane with chlorine is shown. C3H8 + Cl 2 C3H7Cl …
- Question 37
Glycerol is an alcohol with three –OH groups per molecule. C H OH C glycerol H OH …
- Question 38
Compound X decolourises acidified aqueous potassium manganate(VII). Compound X has the empirical formula C2H5O. Some possible structures of X are shown. …
- Question 39
Which statement is correct? A A filtrate is left on the filter paper during filtration. B A saturated solution contains only substances with single bonds. C A solute is a substance that dissolves a solvent. D A solution can never …
- Question 40
A student does two experiments. In experiment 1, ammonium carbonate is reacted with dilute hydrochloric acid. In experiment 2, ammonium carbonate is heated with aqueous sodium hydroxide. In each experiment, the gas evolved is tested with damp blue litmus paper …
Other Chemistry papers from Oct/Nov 2023
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- 5070/21 Theory
- 5070/22 Theory
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- 5070/42 Alternative to Practical