Cambridge IGCSE · 0620 · Paper 1 · Multiple choice (Core)
Chemistry 0620/11 May/June 2026 past paper
Cambridge IGCSE Chemistry (0620) Paper 1 (Multiple choice (Core)), variant 1, May/June 2026: 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_s26_qp_11 · 0620_s26_ms_11
Topics in this paper
Which syllabus chapters 0620/11 May/June 2026 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 0620/11 May/June 2026
- Question 1
At temperature T1, particles of substance X are close together and slide over each other. At temperature T2, substance X is made up of particles that are close together and vibrate in fixed positions. What is the name of the …
- Question 2
Nitrogen is heated in a balloon which expands slightly. Which statements about the molecules of nitrogen are correct? 2 1 They move further apart. 2 They move more quickly. 3 They remain the same distance apart. 4 Their speed remains …
- Question 3
Which row about elements, mixtures and compounds is correct? 3 compound mixture non-metallic element metallic element sulfur brass methane copper A methane copper sulfur brass B methane brass sulfur copper C sulfur copper methane brass …
- Question 4
The table gives information about some atoms and ions. Which row describes the ion with the largest mass? 4 number of electrons number of neutrons atomic number …
- Question 5
Which statement defines atomic number? 5 It is the total number of protons in the nucleus of an atom. A It is the total number of protons and neutrons in the nucleus of an atom. B It is the number …
- Question 6
Which symbol represents an isotope of the main element present in stainless steel? …
- Question 7
Which statement describes the bonding in potassium chloride? 7 Two electrons are shared between two atoms. A Two electrons are shared between two oppositely charged ions. B There is a strong electrostatic attraction between electrons in two different atoms. C …
- Question 8
Which row describes the hardness and a use of graphite? 8 use hardness cutting tools hard A lubricant hard B cutting tools soft C lubricant soft …
- Question 9
What is the formula of potassium oxide? …
- Question 10
Which compound contains the greatest number of atoms in its formula? 10 copper(II) sulfate A ethane B ethanol C sulfuric acid D
- Question 11
Which formula gives the Mr of lead(II) bromide? 11 Ar lead + Ar bromine A Ar lead …
- Question 12
Which statements about the electrolysis of dilute sulfuric acid using inert electrodes are correct? 12 1 Oxygen and sulfur are formed at the positive electrode. 2 Hydrogen is formed at the negative electrode. 3 Oxygen is formed at the anode. …
- Question 13
Fuel cells are used as energy sources in cars. Which row gives a fuel used in a fuel cell and the products formed? 13 products formed fuel in a fuel cell carbon dioxide and water hydrogen A water only hydrogen …
- Question 14
The reaction pathway diagram for the reaction between hydrogen and iodine to form hydrogen iodide is shown. 14 energy progress of reaction …
- Question 15
Which row describes a chemical change? 15 there is a change of state new substances are made always always A sometimes always B always never C sometimes never …
- Question 16
Zinc is reacted with dilute sulfuric acid to produce hydrogen gas. The acid is poured through a funnel into a conical flask containing zinc. Which apparatus could be used to measure the total volume of gas produced? …
- Question 17
Which statement about cobalt(II) chloride and copper(II) sulfate is correct? 17 The blue form of cobalt(II) chloride is hydrated. A The pink form of cobalt(II) chloride is chemically combined with water. B The white form of copper(II) sulfate contains water. …
- Question 18
When heated strongly, silicon(IV) oxide reacts with carbon. SiO2 + 2C →Si + 2CO Which term describes what happens to silicon(IV) oxide? 18 thermal decomposition A neutralisation B oxidation C reduction D
- Question 19
Potassium manganate(VII), KMnO4, is a compound with a range of different uses. What does (VII) indicate about this compound? 19 The oxidation number of potassium in this compound is –7. A The oxidation number of potassium in this compound is …
- Question 20
Thymolphthalein and methyl orange are separately added to test-tubes containing aqueous potassium hydroxide. What is the final colour of the solution in each test-tube? 20 methyl orange thymolphthalein yellow blue A red blue B yellow colourless C red colourless D
- Question 21
Copper(II) chloride is made when copper(II) carbonate reacts with dilute hydrochloric acid. What are the other products in this reaction? 21 water and carbon dioxide A carbon dioxide only B water and hydrogen C hydrogen only …
- Question 22
Dilute acid HA has a pH of 2 and dilute acid HX has a pH of 4. Both acids have the same concentration. Which statement is correct? 22 HA is more acidic than HX and the hydrogen ion concentration of …
- Question 23
Which oxide forms a basic solution in water? 23 carbon dioxide A nitrogen dioxide B sodium oxide C sulfur dioxide D
- Question 24
Copper(II) sulfate is prepared by adding copper(II) oxide to dilute sulfuric acid. The steps used to obtain copper(II) sulfate crystals are listed. 24 1 Warm the filtrate until concentrated. 2 Filter the mixture. 3 Heat the mixture and stir. 4 …
- Question 25
The elements in a group of the Periodic Table show the following trends. 25 1 The element with the lowest proton number has the lowest reactivity. 2 All the elements in the group form basic oxides. 3 The density of …
- Question 26
Which statements about noble gases are correct? 26 1 Their atoms have complete outer shells of electrons. 2 They exist as diatomic molecules. 3 They are in Group VIII of the Periodic Table. 4 They react with oxygen to give …
- Question 27
Which substances have a high melting point and conduct electricity when solid? 27 1 zinc 2 diamond 3 sulfur 4 graphite 3 and …
- Question 28
Which metal is used in aircraft manufacture because it has a low density? 28 aluminium A copper B iron C potassium …
- Question 29
Which statements explain why stainless steel is used to make cutlery? 29 1 It is a good conductor of thermal energy. 2 It is ductile. 3 It is corrosion resistant. 4 It is hard. 3 and …
- Question 30
Nickel reacts with dilute hydrochloric acid. The reaction is slower than the reaction of iron with dilute hydrochloric acid. Strontium reacts with cold water more slowly than sodium reacts with cold water, but faster than iron reacts with cold water. …
- Question 31
Why is distilled water used in practical chemistry rather than tap water? 31 It has a higher boiling point than tap water. A It has a lower melting point than tap water. B It has fewer impurities than tap water. …
- Question 32
An NPK fertiliser is made by mixing two compounds. One of the compounds is Ca(H2PO4)2. What is the other compound? 32 potassium nitrate A potassium sulfate B sodium chloride C ammonium nitrate …
- Question 33
Which row identifies the reactants and products of photosynthesis? 33 products reactants oxygen only carbon dioxide and water A glucose and water carbon dioxide and oxygen B carbon dioxide and water glucose and oxygen C glucose and oxygen water and …
- Question 34
The structures of four different organic compounds are shown. …
- Question 35
The names of organic compounds with seven carbon atoms in a chain start with ‘hept’. …
- Question 36
Natural gas is a combustible gas that is a mixture of simple hydrocarbon compounds. Which substance is the main constituent of natural gas? 36 methane A butane B carbon monoxide C carbon dioxide D
- Question 37
A large alkane is cracked to produce smaller hydrocarbons. The formulas of three of these hydrocarbons are shown. …
- Question 38
Which statements are correct? 38 1 The polymer of ethene is poly(ethane). 2 Monomers are small molecules. 3 Monomers join together to form polymers. 2 only D 2 and …
- Question 39
Which piece of apparatus is used to measure accurately the volume of a liquid in an acid–base titration? 39 a balance A a beaker B a burette C a conical flask …
- Question 40
Aqueous X reacts with aqueous NaOH to produce a white precipitate that is soluble in excess aqueous NaOH. Aqueous X reacts with acidified aqueous Ba(NO3)2 to produce a white precipitate. What is X? 40 AlCl 3 D CaCl 2 C …
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