Cambridge IGCSE · 0620 · Paper 1 · Multiple choice (Core)
Chemistry 0620/12 Feb/March 2020 past paper
Cambridge IGCSE Chemistry (0620) Paper 1 (Multiple choice (Core)), variant 2, Feb/March 2020: 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: 0620_m20_qp_12 · 0620_m20_ms_12
Grade thresholds for 0620/12 Feb/March 2020
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 | 21 | 18 | 15 | 12 |
Topics in this paper
Which syllabus chapters 0620/12 Feb/March 2020 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 0620/12 Feb/March 2020
- Question 1
Which row represents the particles of a gas colliding most frequently? pressure temperature A high high B high low C low high D low low
- Question 2
Which test is used to show that a sample of water is pure? A Evaporate the water to see if any solids remain. B Heat the water to check its boiling point. C Test with anhydrous cobalt(II) chloride. D Use …
- Question 3
Which piece of apparatus is used to measure 1.5 cm3 of a solution accurately? A 25 cm3 measuring cylinder B 25 cm3 pipette C 50 cm3 measuring cylinder D 50 cm3 burette
- Question 4
A representation of an atom is shown. …
- Question 5
Lithium reacts with fluorine to form the compound lithium fluoride. Which statement about this reaction is correct? A Each fluorine atom gains one electron. B Each fluorine atom gains two or more electrons. C Each fluorine atom loses one electron. …
- Question 6
Ammonia, NH3, is a covalent molecule. Which diagram shows the outer shell electron arrangement in a molecule of ammonia? …
- Question 7
Which row describes the structure and a use of diamond? structure use A ionic in cutting tools B ionic lubricant C macromolecular in cutting tools D macromolecular lubricant
- Question 8
Methane, CH4, burns in air to form carbon dioxide and water. What is the balanced equation for this reaction? A CH4(g) …
- Question 9
Which statement about electrolysis is correct? A Chemical energy is converted to electrical energy. B Electrons flow through the electrolyte. C Ionic compounds are broken down. D Metals are formed at the positive electrode.
- Question 10
Which energy level diagram shows the reaction that will give out the most energy? energy progress of reaction C reactants products energy progress of reaction D reactants products energy progress of reaction A reactants products energy progress of reaction B …
- Question 11
Which change is a physical change? A Copper(II) carbonate changes colour from green to black when it is heated, and stays black when it cools. B Ethanol reacts with oxygen to form carbon dioxide and water. C Hydrogen peroxide decomposes …
- Question 12
Marble chips (calcium carbonate) react with hydrochloric acid in an exothermic reaction. calcium carbonate + hydrochloric acid → calcium chloride + water + carbon dioxide When excess marble chips are added to dilute hydrochloric acid the rate of the reaction …
- Question 13
The diagram shows the change from an anhydrous salt to its hydrated form. hydrated salt anhydrous salt forward reverse Which statement is correct? A The forward reaction requires heat and water. B The forward reaction requires water only. C The …
- Question 14
A violent reaction occurs when a mixture of chromium(III) oxide and aluminium is ignited with a magnesium fuse as shown. crucible magnesium fuse mixture of chromium(III) oxide and aluminium sand The equation for the reaction is shown. Cr2O3 + 2Al …
- Question 15
A farmer’s soil is acidic. Which substance should the farmer add to neutralise the soil? A ammonium sulfate B calcium oxide C hydrochloric acid D NPK fertiliser
- Question 16
Three elements, X, Y and Z, are burned in oxygen. The oxides formed are dissolved in water and the pH of the solutions measured. The results are shown. pH of oxide solution …
- Question 17
The following substances can be reacted together to prepare salts. 1 copper(II) oxide and excess hydrochloric acid 2 hydrochloric acid and excess sodium hydroxide 3 hydrochloric acid and excess zinc carbonate In which reactions can the excess reactant be separated …
- Question 18
Salt S is dissolved in water and three tests are carried out on the solution. test result 1 aqueous sodium hydroxide is added green precipitate formed, insoluble in excess sodium hydroxide 2 dilute nitric acid is added no reaction 3 …
- Question 19
Which statement about the Periodic Table is correct? A Most metallic elements are on the left. B Elements in the same period have the same number of outer electrons. C Elements on the left are usually gases. D The relative …
- Question 20
- Question 21
Some properties of substances are listed. 1 They conduct electricity. 2 They have low densities. 3 They have high melting points. 4 They are malleable. Which properties are shown by transition metals? A 1 and 3 only B 1 and …
- Question 22
Which statement about the noble gas argon is correct? A It burns with a hot flame. B It is used in airships because of its low density. C It exists as diatomic molecules. D It has eight electrons in its …
- Question 23
Sodium is a Group I metal. Which property, that is typical of most metals, is not shown by sodium? A conductor of heat B high melting point C malleable D shiny
- Question 24
Manganese, nickel and silver are all metals. Samples of powdered manganese, nickel and silver were placed in separate test-tubes containing dilute hydrochloric acid. The results are shown. hydrogen hydrogen manganese nickel silver What is the order of reactivity of the …
- Question 25
Which statement about aluminium is correct? A Aluminium is easy to extract from its ore because it is near the bottom of the reactivity series. B Aluminium is formed when aluminium oxide is heated with carbon. C Bauxite is an …
- Question 26
Some properties of aluminium are listed. 1 It conducts heat. 2 It has a low density. 3 It is strong. 4 It is resistant to corrosion. Which of these properties make aluminium suitable for making food containers for chilled food …
- Question 27
Water is treated at a waterworks to make it fit to drink. What is present in the water when it leaves the waterworks? A bacteria only B bacteria and insoluble substances C chlorine compounds only D chlorine compounds and soluble …
- Question 28
Sulfur dioxide, carbon monoxide and oxides of nitrogen are common gaseous pollutants found in the air. Which pollutants contribute to acid rain? A carbon monoxide and sulfur dioxide B oxides of nitrogen and sulfur dioxide C oxides of nitrogen only …
- Question 29
Which methods prevent iron from rusting? coating with zinc painting washing with salt water …
- Question 30
Fertilisers are mixtures of different compounds used to increase the growth of crops. Which pair of substances contain the three essential elements for plant growth? A ammonium nitrate and calcium phosphate B ammonium nitrate and potassium chloride C ammonium phosphate …
- Question 31
Which process does not add a greenhouse gas to the atmosphere? A burning methane B decomposition of vegetation C polymerisation D respiration
- Question 32
Why is sulfur dioxide used as a food preservative? A It is a gas at room temperature. B It is used to make sulfuric acid. C It kills bacteria. D It reacts with alkalis.
- Question 33
Which statements about lime (calcium oxide) and limestone (calcium carbonate) are correct? 1 Limestone is used in the manufacture of iron. 2 Lime is made by heating limestone. 3 Powdered limestone is heated with clay in the production of cement. …
- Question 34
The formulae of two organic compounds, P and Q, are shown. P Q CH3CH2CH2OH CH3CHCHCH3 Which type of organic compounds are P and …
- Question 35
Petroleum is an important raw material that is separated into useful products. Which terms describe petroleum and the method used to separate it? description separation method A compound cracking B compound fractional distillation C mixture cracking D mixture fractional distillation
- Question 36
Which type of compound is a member of a homologous series? A carbonate B carboxylic acid C halogen D hydroxide
- Question 37
Which statements about propene are correct? 1 Propene contains only single bonds. 2 Propene decolourises bromine water. 3 Propene is obtained by cracking. 4 Propene is a hydrocarbon. A 1 and …
- Question 38
Which row describes the production of ethanol and its properties? can be made from glucose can be made from ethene is used as a fuel is used as a solvent …
- Question 39
Which statements about ethanoic acid are correct? 1 It contains a carbon–oxygen double bond. 2 It contains two carbon atoms. 3 It decolourises bromine water. 4 It contains an –OH group. A 1 and 2 only B 1 and …
- Question 40
Which polymers are natural polymers? 1 carbohydrates 2 poly(ethene) 3 protein …
Other Chemistry papers from Feb/March 2020
- 0620/22 Multiple choice (Extended)
- 0620/32 Theory (Core)
- 0620/42 Theory (Extended)
- 0620/62 Alternative to Practical