Cambridge IGCSE · 0620 · Paper 2 · Multiple choice (Extended)
Chemistry 0620/21 May/June 2024 past paper
Cambridge IGCSE Chemistry (0620) Paper 2 (Multiple choice (Extended)), variant 1, May/June 2024: the question paper and its official mark scheme, 40 questions worth 40 marks. Free to open, no account needed.
- Questions
- 40
- Marks
- 40
File names: 0620_s24_qp_21 · 0620_s24_ms_21
Topics in this paper
Which syllabus chapters 0620/21 May/June 2024 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 0620/21 May/June 2024
- Question 1
A gas is heated. The pressure is kept constant. Which statement describes the behaviour of the particles in the gas? 1 The particles move faster and become closer together. A The particles move faster and become further apart. B The …
- Question 2
A mixture of ice and water is left to stand and the ice melts. Which row describes what happens as the ice is melting? 2 energy change temperature of mixture average kinetic energy of particles decreases increases A energy is …
- Question 3
Hydrogen chloride gas [Mr: HCl, 36.5] is released at P in the apparatus shown. The universal indicator paper turns red after …
- Question 4
Four statements about atoms are listed. 4 The centre of an atom is positively charged. 1 Protons and electrons are located in the nucleus. 2 Protons and electrons have the same mass. 3 Most of the mass of an atom …
- Question 5
The electronic configurations of two elements are given. element L: 2,8,8,1 element M: 2,8,4 Which row identifies the group number and the period number for element L and element M? 5 element M element L period number group number period …
- Question 6
Which statement explains why isotopes of the same element have the same chemical properties? 6 They have different numbers of protons in their nucleus. A They have different numbers of neutrons in their nucleus. B They have the same electronic …
- Question 7
Which statements about potassium chloride are correct? 7 It conducts electricity when solid because its ions are free to move. 1 It has a high melting point because it has strong intermolecular forces. 2 Its structure is a giant lattice …
- Question 8
How many electrons are shared in one molecule of nitrogen and in one molecule of ethene? 8 ethene nitrogen …
- Question 9
What is the total number of electrons in one molecule of ammonia, NH3? …
- Question 10
When heated, copper(II) oxide, CuO, reacts with ammonia, NH3. 3CuO + 2NH3 →3Cu …
- Question 11
What is the empirical formula of ethanoic acid? …
- Question 12
Magnesium chloride, MgCl 2, contains magnesium ions and chloride ions. How many chloride ions are present in two moles of magnesium chloride? …
- Question 13
A metal object is electroplated with copper. One electrode is the metal object and the other electrode is copper. The electrolyte is aqueous copper(II) sulfate. Which row shows the ionic half-equation for the reaction at the anode and the observation …
- Question 14
Which statement about electrolysis is correct? 14 Chemical energy is converted to electrical energy. A Electrons flow through the electrolyte. B Ionic compounds are broken down. C Metals are formed at the positive electrode. D
- Question 15
The reaction between hydrogen and oxygen releases 486kJ/mol of energy. …
- Question 16
Which reaction pathway diagram shows the reaction that will give out the most energy? The scale on the y-axis is the same in each diagram. 16 energy progress of reaction C reactants products energy progress of reaction D reactants products …
- Question 17
When calcium carbonate is heated strongly, a gas is given off. Which word describes this change? 17 chemical A exothermic B physical C reduction D
- Question 18
Powdered magnesium carbonate is added to excess dilute hydrochloric acid. The total volume of gas produced is measured over time. A graph of the results is shown. …
- Question 19
Which statements explain why increasing the temperature changes the rate of a chemical reaction? It increases the activation energy. 1 It increases the frequency of collisions between the reacting particles. 2 It increases the kinetic energy of the reacting particles. …
- Question 20
Hydrogen is made by reacting carbon with steam. The equation for the reaction is shown. …
- Question 21
Which row shows the conditions used for the conversion of sulfur dioxide to sulfur trioxide in the Contact process? 21 catalyst temperature/°C pressure/atm vanadium(V) oxide …
- Question 22
The equation for the reaction of magnesium with carbon dioxide is shown. 2Mg + CO2 →2MgO + C Which statement about this reaction is correct? 22 Magnesium is oxidised and carbon dioxide is reduced. A Magnesium is reduced and carbon …
- Question 23
Chlorine displaces bromine from aqueous potassium bromide. The ionic equation for the reaction is shown. Cl 2 + 2Br– →2Cl – + Br2 Which statement about this reaction is correct? 23 Bromide ions act as an oxidising agent. A Bromide …
- Question 24
Which gas is produced when ammonium chloride is warmed with aqueous sodium hydroxide? 24 ammonia A chlorine B hydrogen C nitrogen D
- Question 25
Which equation represents a solution of ethanoic acid in water? 25 HCOOH(aq) ⇌HCOO–(aq) + H+(aq) A HCOOH(aq) →HCOO–(aq) + H+(aq) B CH3COOH(aq) ⇌CH3COO–(aq) + H+(aq) C CH3COOH(aq) →CH3COO–(aq) + H+(aq) D
- Question 26
Four statements about the reactions of oxides with dilute hydrochloric acid and with aqueous sodium hydroxide are listed. 26 Aluminium oxide reacts with both dilute hydrochloric acid and aqueous sodium hydroxide. 1 Calcium oxide reacts with both dilute hydrochloric acid …
- Question 27
Which statement about elements in Period 3 of the Periodic Table is correct? 27 Aluminium is a non-metal in Group III. A Argon is in Group VIII and has eight electrons in its outer electron shell. B Magnesium is in …
- Question 28
Which row describes the structure of Group VII elements and the trend in their reactivity down the group? 28 reactivity down Group VII structure increases diatomic A decreases diatomic B increases monatomic C decreases monatomic D
- Question 29
Some information about four elements, …
- Question 30
Propanoic acid is a carboxylic acid. It has similar chemical properties to ethanoic acid. Which statements are correct? 30 Aqueous propanoic acid is a weaker acid than dilute hydrochloric acid. 1 Propanoic acid partially ionises in aqueous solution. 2 Propanoic …
- Question 31
Iron rusts in the presence of oxygen and water. Which statements about the rusting of iron are correct? 31 Anhydrous iron(II) oxide is produced when iron rusts. 1 Iron rusts more quickly when attached to a piece of zinc. 2 …
- Question 32
An iron nail is added to aqueous copper(II) sulfate and a different iron nail is added to aqueous magnesium sulfate. The results are shown. 32 result experiment nail is coated with a brown solid iron nail in aqueous copper(II) sulfate …
- Question 33
Which pollutant leads to the deoxygenation of water in ponds and lakes? 33 fertilisers containing nitrates and phosphates A toxic metal compounds B combustion products of fossil fuels C acid rain D
- Question 34
Which statement identifies a sample of water as pure? 34 It melts at room temperature. A It turns anhydrous copper(II) sulfate blue. B It turns hydrated cobalt(II) chloride from blue to pink. C It boils at 100°C. D
- Question 35
Oxides of nitrogen are produced by car engines. In a catalytic converter oxides of nitrogen are removed by reacting them with compound X. Which row describes the type of reaction oxides of nitrogen undergo and identifies compound X? 35 compound …
- Question 36
What is a disadvantage of producing ethanol using the catalytic addition of steam to ethene? 36 the energy cost is low A the process is continuous B the process uses a non-renewable raw material C the ethanol is pure D
- Question 37
Which statement about the polymer PET is correct? 37 It can be broken down into its monomers and re-polymerised. A It is an addition polymer. B It is a polyamide. C It is made from amino acid monomers. D
- Question 38
The formulae of five compounds are listed. …
- Question 39
Propane reacts with chlorine. Which statements about this reaction are correct? 39 Ultraviolet light is used to provide the activation energy. 1 Propane undergoes an addition reaction. 2 One of the products is CH3CH2Cl. 3 One of the products is …
- Question 40
Which statement about chromatography is correct? 40 It is not possible for two different substances to have the same Rf value. A It is only possible to use chromatography on substances which have a colour. B It is possible to …
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