Cambridge O Level · 5070 · Paper 1 · Multiple choice
Chemistry 5070/12 Oct/Nov 2024 past paper
Cambridge O Level Chemistry (5070) Paper 1 (Multiple choice), variant 2, 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
- 27
File names: 5070_w24_qp_12 · 5070_w24_ms_12
Grade thresholds for 5070/12 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 |
|---|---|---|---|---|
| 27 | 22 | 17 | 15 | 14 |
Topics in this paper
Which syllabus chapters 5070/12 Oct/Nov 2024 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 5070/12 Oct/Nov 2024
- Question 1
Helium gas and argon gas are mixed in a closed container at room temperature and pressure (r.t.p.). What happens when the two gases are in the container? A Argon and helium atoms become evenly mixed throughout the container even though …
- Question 2
Substance X has a simple molecular structure and substance Y has a giant covalent structure. Which row is correct? X could be Y could be A an element only an element only B an element only an element or a …
- Question 3
The diagram shows an atom of element Z. protons + 15 neutrons Which symbol for element Z is correct? …
- Question 4
A sample of element Q contains two isotopes. The diagram shows the relative abundances and relative masses of the two isotopes. …
- Question 5
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 6
Which substance is not malleable and conducts electricity by the movement of electrons through a lattice of atoms? A aqueous sodium chloride B gold C graphite D solid sodium chloride
- Question 7
What is the relative molecular mass, Mr, of ethene? A the average mass of the isotopes of C and H compared to 12 1 of the mass of an atom of 12C B the atomic numbers of the isotopes of …
- Question 8
What is the relative molecular mass, Mr, of …
- Question 9
Which contains the greatest mass of oxygen? A 0.2 mol of aluminium nitrate, Al (NO3)3 B 0.3 mol of potassium sulfate, K2SO4 C 0.4 mol of sodium nitrate, NaNO3 D 0.5 mol of magnesium carbonate, MgCO3
- Question 10
Compound Z contains carbon, hydrogen and oxygen only. Compound Z contains 48.65% carbon and 8.11% hydrogen by mass. What is the empirical formula of …
- Question 11
Which fertiliser contains the highest percentage by mass of nitrogen? [Mr: NH4NO3, 80; (NH4)3PO4, 149; (NH4)2SO4, 132; (NH2)2CO, 60] A NH4NO3 B (NH4)3PO4 C (NH4)2SO4 D (NH2)2CO
- Question 12
An electrolytic cell is shown. platinum cathode dilute sulfuric acid platinum anode Which statement is correct? A Electrons move from the cathode to the anode in the external circuit. B Hydrogen ions gain electrons at the anode. C In the …
- Question 13
An aqueous mixture of copper(II) nitrate and silver nitrate is electrolysed with pure copper electrodes. Which ionic half-equation describes the change occurring at the anode? A Cu Cu2+ …
- Question 14
What is a disadvantage of using a hydrogen-oxygen fuel cell to power a car? A Gasoline / petrol is a non-renewable resource. B The hydrogen tank may split in an accident, leading to an explosion. C The product of the …
- Question 15
When chemical reaction X takes place, thermal energy is given out. Which row is correct for this reaction? type of reaction explanation A endothermic More energy is required to break the bonds than the energy released when the bonds are …
- Question 16
Which statement about a physical change is correct? A A physical change is impossible to reverse. B In a physical change, the appearance of a substance may change. C New substances are formed in a physical change. D There is …
- Question 17
Gas P decomposes to form gas Q. xP yQ Two experiments are done to investigate the rate of reaction. The conditions are the same except that two different temperatures, T1 and T2, are used. The results are plotted on …
- Question 18
Samples of nitrogen and hydrogen are reacted and allowed to reach equilibrium. The equation is shown. …
- Question 19
In the diagram, R represents one of the reactions in the Contact process. products gas Z oxygen R Which statement is correct? A Gas Z is SO2. B In R, an iron catalyst speeds up the reaction. C In R, …
- Question 20
Peroxodisulfate ions, S2O8 2–, react with iron(II) ions, Fe2+. …
- Question 21
Which solid reacts with dilute hydrochloric acid to produce a gas? A carbon B copper C magnesium oxide D sodium carbonate
- Question 22
Which 1 mol / dm3 aqueous solution has the highest pH? A hydrochloric acid B sodium chloride C sodium hydroxide D sulfuric acid
- Question 23
Oxide Q reacts with separate samples of dilute hydrochloric acid and aqueous potassium hydroxide. Both reactions produce a salt and water. Which statement is correct? A Q is an acidic oxide. B Q is an amphoteric oxide. C Q is …
- Question 24
The table shows four methods used to prepare pure salts. Which row shows a method of making a pure sample of each named salt? acid + carbonate acid + metal precipitation titration A copper(II) sulfate magnesium sulfate silver chloride sodium …
- Question 25
Which property determines the order of the elements in the Periodic Table? A the masses of their atoms B the number of electrons in the outer shell C the number of neutrons in the nucleus D the number of protons …
- Question 26
Which statement explains why helium and neon are unreactive? A They are both gases at room temperature and pressure. B They both have eight electrons in their outer shell. C They both have equal numbers of protons and electrons in …
- Question 27
Substance X conducts electricity in the solid state. Substance X is malleable. Which statement is correct? A X conducts electricity by the movement of electrons between layers of negative ions. B X conducts electricity by the movement of positive ions …
- Question 28
Aluminium and copper are good conductors of electricity. Why is aluminium used in overhead electrical cables instead of copper? A Aluminium is above copper in the reactivity series. B Aluminium is less dense than copper. C Copper does not have …
- Question 29
The oxide of Z is reduced by heating with carbon. What is Z? A aluminium B calcium C magnesium D zinc
- Question 30
A metal ore contains an oxide, MO. Metal M forms coloured compounds. When a piece of iron is placed into a solution containing aqueous M2+ ions, M is displaced. Which row is correct? density of M possible method of extraction …
- Question 31
Iron can be extracted from the ore hematite. What is the maximum mass of iron that is produced from 500 kg of hematite? [Ar: O, 16; Fe, …
- Question 32
Which row describes an advantage and a disadvantage of fertilisers? advantage disadvantage A deoxygenation of water damage to aquatic life B deoxygenation of water addition of nitrogen to the air C improved plant growth damage to aquatic life D improved …
- Question 33
Which row about the adverse effects of air pollutants is correct? methane oxides of nitrogen particulates A increased global warming respiratory problems cancer B cancer acid rain increased global warming C increased global warming cancer respiratory problems D respiratory problems …
- Question 34
How many different unbranched esters have the molecular formula …
- Question 35
Petroleum is separated in a fractionating column. Which statements are correct? 1 The compounds at the top of the column are more volatile and have lower boiling points. 2 The compounds at the bottom of the column are more viscous. …
- Question 36
Which statement about hydrocarbons is correct? A Alkenes are unsaturated which means that they are less soluble in water than alkanes. B Alkenes contain a higher percentage by mass of carbon than alkanes. C Cracking large alkanes produces only smaller …
- Question 37
Two statements are shown. 1 When ethanol is made from glucose by fermentation, each glucose molecule produces two molecules of ethanol. 2 When ethanoic acid is made from ethanol, the ethanol acts as a reducing agent. Which description of these …
- Question 38
In a titration, a 25.0 cm3 sample of 0.100 mol / dm3 sodium hydroxide is exactly neutralised by 16.2 cm3 of dilute sulfuric acid. The equation for the reaction is shown. H2SO4 + 2NaOH Na2SO4 + 2H2O What is …
- Question 39
Three liquids, X, Y and Z, are tested and the results are shown. test …
- Question 40
Compound Q is soluble in water. A solution of Q gives a white precipitate when dilute sulfuric acid is added. When Q is warmed with aqueous sodium hydroxide and aluminium foil, a gas is produced which turns damp red litmus …
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