Cambridge O Level · 5070 · Paper 1 · Multiple choice
Chemistry 5070/11 Oct/Nov 2021 past paper
Cambridge O Level Chemistry (5070) Paper 1 (Multiple choice), variant 1, Oct/Nov 2021: 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_w21_qp_11 · 5070_w21_ms_11
Grade thresholds for 5070/11 Oct/Nov 2021
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 | 23 | 19 | 16 | 13 |
Topics in this paper
Which syllabus chapters 5070/11 Oct/Nov 2021 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 5070/11 Oct/Nov 2021
- Question 1
A student makes aqueous copper(II) sulfate. The student adds an excess of copper(II) oxide powder to warm sulfuric acid and stirs the mixture. Which apparatus should be used to separate aqueous copper(II) sulfate from the excess copper(II) oxide? A burette …
- Question 2
A student follows the rate of the reaction between marble chips, CaCO3, and dilute hydrochloric acid. CaCO3 + 2HCl CaCl 2 + CO2 + H2O Which diagrams show apparatus that, with a stopwatch, is suitable for this experiment? measuring …
- Question 3
A mixture of three liquids is separated by fractional distillation. Which statements are correct? 1 The mixture boils at constant temperature throughout the separation. 2 The temperature at which the mixture boils increases during the separation. 3 The liquid with …
- Question 4
A mixture of four coloured dyes is analysed by chromatography. The result is shown. solvent front baseline Which change will allow the four dyes to be seen? A Measure the Rf values of the spots carefully. B Run the chromatogram …
- Question 5
A compound X, when heated with an aqueous solution of compound Y, produces a gas that turns red litmus blue. 1 Y could be potassium hydroxide. 2 X is an acid. 3 X could be an ammonium salt. 4 X …
- Question 6
An aqueous solution of zinc chloride is tested by adding reagents. Which observation is correct? reagent added to zinc chloride (aq) observations A acidified aqueous barium nitrate forms a white precipitate B aqueous ammonia forms a white precipitate, soluble in …
- Question 7
The rate of diffusion of carbon dioxide and methane is investigated at two different temperatures, one high and one low. Which row correctly shows the gas that diffuses faster and the temperature at which diffusion takes place most rapidly? gas …
- Question 8
Which statement about atoms and ions is correct? A Atoms and ions of the same element must have different numbers of neutrons. B Isotopes of different elements must have different numbers of neutrons. C The charge on a positive ion …
- Question 9
The bonding in a molecule of carbon dioxide can be represented by a dot-and-cross diagram. Which diagram is correct? …
- Question 10
Which statement about the structure or bonding of metals is correct? A A metal lattice consists of negative ions in a ‘sea of electrons’. B Electrons in a metal move randomly through the lattice. C Metals are malleable because the …
- Question 11
The relative atomic mass of chlorine is 35.5. What is the mass of 2.0 mol of chlorine gas? …
- Question 12
Methane burns in oxygen. CH4(g) …
- Question 13
An aqueous solution is made by dissolving 3.4 g of sodium hydroxide, NaOH, to make 500 cm3 of solution. What is the concentration, in mol / dm3, of this sodium hydroxide solution? …
- Question 14
Which statement about electrolysis reactions is correct? A Bromine is formed at the anode when molten lead bromide is electrolysed. B Positive ions are discharged at the positive electrode. C Sodium is formed at the cathode when aqueous sodium chloride …
- Question 15
The apparatus shown is set up to plate a steel key with copper. steel key copper aqueous copper(II) sulfate + – The key does not get coated with copper. Which change needs to be made to plate the key? A …
- Question 16
Which process is endothermic? A atoms bonding to form molecules B the chemical reaction occurring in a fuel cell C the reaction of carbon dioxide and water to produce glucose and oxygen D the reaction of methane with oxygen to …
- Question 17
The reaction of hydrogen with chlorine to form gaseous hydrogen chloride is exothermic. Which statement is correct? A The total energy of bond formation is greater than the total energy of bond breaking. B The total energy of bond breaking …
- Question 18
The equation shows the reaction for the manufacture of ammonia. …
- Question 19
Which statements about oxidation and reduction are correct? 1 Reduction can involve the loss of oxygen. 2 Oxidation can involve the loss of hydrogen. 3 Reduction can involve the loss of electrons. A 1 and 2 only B 1 and …
- Question 20
Aqueous ammonium nitrite, NH4NO2, decomposes when heated. NH4NO2(aq) …
- Question 21
Elements X and Y react together in a reversible reaction to form XY2. …
- Question 22
Two solutions are prepared. ● Solution P is 0.050 mol / dm3 hydrochloric acid. ● Solution Q is 0.100 mol / dm3 butanoic acid. A 2 cm strip of magnesium ribbon is put into 100 cm3 of each solution. Fizzing …
- Question 23
Which compound can be formed by precipitation? A NaCl B K2SO4 C Ca(NO3)2 D PbSO4
- Question 24
In a neutralisation reaction, which change in particles occurs? A atoms molecules B ions molecules C atoms ions D ions atoms
- Question 25
In order to decide which would be the better nitrogenous fertiliser, a student calculates the percentage by mass of nitrogen in both ammonium sulfate and ammonium nitrate. Which row gives the correct results? percentage by mass of nitrogen in ammonium …
- Question 26
The manufacture of sulfuric acid by the Contact process involves the use of three different raw materials. How many of these raw materials are elements, how many are compounds and how many are mixtures? elements compounds mixtures …
- Question 27
The diagram shows part of the Periodic Table. …
- Question 28
Which statement about elements in the Periodic Table is correct? A Elements at the left-hand side of the Periodic Table are more metallic than those, in the same period, near the right-hand side. B Elements at the top of a …
- Question 29
Which statement about the properties of the elements in Group VIII of the Periodic Table, helium to xenon, is correct? A Argon reacts with iron to form a compound. B Helium is less dense than air. C The elements change …
- Question 30
Which two statements indicate that metal M may have a proton number between 21 and 30? 1 It conducts electricity. 2 It does not react with water. 3 It forms two basic oxides with formulae MO and M2O3. 4 It …
- Question 31
Different metals react with water in different ways. Which statement is correct? A Calcium does not react with cold water. B Iron reacts slowly with steam to produce an oxide of iron and hydrogen. C Magnesium reacts with steam to …
- Question 32
Metal X is more reactive than zinc but less reactive than sodium. What would be the best method for obtaining metal X from its ore? A electrolysis of an aqueous solution of a salt of X B electrolysis of the …
- Question 33
Steel is often galvanised. Which statements about galvanising are correct? 1 Galvanising makes a steel alloy. 2 Galvanising provides a sacrificial protection against rusting. 3 Galvanising coats a layer of zinc onto steel. A 1 and 2 only B 1 …
- Question 34
In the extraction of aluminium from aluminium oxide, the following three reactions take place. 1 Al …
- Question 35
The carbon cycle regulates the amount of carbon dioxide in the atmosphere. Combustion, photosynthesis and respiration are involved in this cycle. How do these processes affect the amount of carbon dioxide in the atmosphere? combustion photosynthesis respiration A increases increases …
- Question 36
Which statement about alkanes is correct? A Alkanes are described as being saturated because they are insoluble in water. B Alkanes react with chlorine in an addition reaction. C The alkane containing 10 carbon atoms in each molecule has a …
- Question 37
The structure of compound X is shown. …
- Question 38
When ethene reacts with steam to form ethanol, which type of reaction takes place? A addition B fermentation C polymerisation D reduction
- Question 39
Which compound could be a flavouring in a non-alcoholic fruit drink? A CH3CH2OH B CH3CH2CH2CH2COOH C CH3COOCH2CH2CH2CH2CH3 D CH3CH2CH2CH2CH2OH
- Question 40
P is a polymer that: ● has six carbon atoms in each of the monomers from which it is formed ● is not a polyester ● is formed using condensation polymerisation. What is the partial structure of P? C (CH2)4 …
Other Chemistry papers from Oct/Nov 2021
- 5070/12 Multiple choice
- 5070/21 Theory
- 5070/22 Theory
- 5070/41 Alternative to Practical
- 5070/42 Alternative to Practical