IGCSE Chemistry (0620) — October–November 2023, Paper 11
40 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →The three rectangles show the arrangements of the particles in each of the three states of matter. X, Y and Z represent the processes needed to change from one state to another. Y…
Answer this question and get it marked →Which substance is a pure compound? A air B brass C ethanol D petroleum
Answer this question and get it marked →The Group I element potassium forms an ionic bond with the Group VII element fluorine. Which two ions are produced? A K+ and F+ B K+ and F– C K– and F– D K– and F+
Answer this question and get it marked →An isotope of lithium has the symbol 73 Li. What is the arrangement of electrons in one atom of this isotope of lithium? A B C D
Answer this question and get it marked →Fluorine, F2, is in the same group of the Periodic Table as chlorine, Cl 2. Which diagram represents the arrangement of the outer-shell electrons in a molecule of fluorine? A B F…
Answer this question and get it marked →Which use of graphite depends on the layers of carbon atoms being able to slide over each other? A cutting tools B electrodes C jewellery D lubricant
Answer this question and get it marked →Which equations are balanced? 1 Fe2O3 + 3CO → 2Fe + 3CO2 2 ZnCO3 + 2HCl → ZnCl 2 + CO2 + 2H2O 3 Mg(NO3)2 + NaOH → Mg(OH)2 + 2NaNO3 4 CaCO3 + H2SO4 → CaSO4 + H2O + CO2 A 1 and 2 B…
Answer this question and get it marked →The equation for the combustion of methane is shown. CH4 + 2O2 → CO2 + 2H2O Which mass of methane produces 36 g of water? A 16 g B 18 g C 32 g D 64 g
Answer this question and get it marked →What is produced at each electrode during the electrolysis of aqueous solutions using inert electrodes? positive electrode (anode) negative electrode (cathode) A metals or…
Answer this question and get it marked →Which statement about a hydrogen-oxygen fuel cell in a car is correct? A The fuel cell produces heat, which powers the car. B The fuel cell is supplied with hydrogen directly from…
Answer this question and get it marked →The reaction pathway diagram for a reaction is shown. products energy reactants progress of reaction Which statements are correct? 1 The reaction is exothermic. 2 The reaction is…
Answer this question and get it marked →Which process involves a chemical change? A adding sodium to water B boiling water C dissolving sodium chloride in water D producing water from aqueous sodium chloride
Answer this question and get it marked →An experiment is carried out to find the rate of reaction between hydrochloric acid and zinc. Zn(s) + 2HCl (aq) → ZnCl 2(aq) + H2(g) The results of the experiment are shown.…
Answer this question and get it marked →Solid S changes colour from white to blue when water is added. What is S? A anhydrous cobalt(II) chloride B anhydrous copper(II) sulfate C hydrated cobalt(II) chloride D hydrated…
Answer this question and get it marked →Which equation shows the reduction of copper? A CuO + C → Cu + CO B 2CuS + 3O2 → 2CuO + 2SO2 C Cu(g) → Cu(l) D Cu(l) → Cu(s)
Answer this question and get it marked →Which solids react with dilute sulfuric acid to form aqueous magnesium sulfate? 1 magnesium 2 magnesium hydroxide 3 magnesium nitrate 4 magnesium oxide A 1, 2 and 4 B 1 and 3 C 2,…
Answer this question and get it marked →Which statements about an aqueous acid are correct? 1 Ammonia is formed when solid ammonium nitrate is added to an aqueous acid. 2 Effervescence is seen when sodium carbonate is…
Answer this question and get it marked →Copper(II) sulfate is formed by reacting excess solid copper(II) carbonate with dilute sulfuric acid. Which processes are part of the preparation of solid copper(II) sulfate? 1…
Answer this question and get it marked →Element X forms ions with the formula X2–. Which row describes element X? group number type of element A II metal B II non-metal C VI metal D VI non-metal
Answer this question and get it marked →Which compound is likely to be coloured? A KMnO4 B KNO3 C K2CO3 D K2SO4
Answer this question and get it marked →Chlorine, bromine and iodine are in the same group of the Periodic Table. Which statements about these three elements are correct? 1 Iodine is more reactive than chlorine. 2 They…
Answer this question and get it marked →The electronic configurations of four elements, P, Q, R and S, are shown. electronic element configuration P 2 Q 2,2 R 2,6 S 2,8 Which elements are unreactive monatomic gases? A P…
Answer this question and get it marked →The table shows some physical properties of four different substances. Which row describes the properties of a non-metallic element? melting point conductivity conductivity / °C…
Answer this question and get it marked →The equation shows the reaction between a halogen and the aqueous ions of another halogen. X2 + 2Y – → 2X – + Y2 What is X2 and the colour of Y –? X2 Y– A chlorine brown B…
Answer this question and get it marked →Zinc oxide reacts with carbon to produce zinc. Which equation represents this reaction? A 2ZnO + C → 2Zn + CO B 2ZnO + 2C → 2Zn + 2CO2 C ZnO + C → Zn + CO D ZnO + 2C → Zn + 2CO2
Answer this question and get it marked →Iron nails are stored in an airtight container. lid air iron nails The nails begin to rust after a few days. How can the rusting of the nails be prevented? A Leave the lid off. B…
Answer this question and get it marked →Four substances present in the blast furnace during iron extraction are listed. 1 calcium carbonate 2 carbon dioxide 3 carbon monoxide 4 iron(III) oxide Which substances are both…
Answer this question and get it marked →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…
Answer this question and get it marked →Which mixture of salts produces an NPK fertiliser? A ammonium phosphate + potassium sulfate B calcium phosphate + sodium nitrate C potassium nitrate + calcium sulfate D sodium…
Answer this question and get it marked →What are the main products obtained by the fractional distillation of liquid air? A carbon dioxide and oxygen B carbon dioxide and water vapour C nitrogen and oxygen D nitrogen…
Answer this question and get it marked →In which reaction is the rate of reaction increased by light? A carbon dioxide + water → glucose + oxygen B ethanoic acid + sodium carbonate → sodium ethanoate + water + carbon…
Answer this question and get it marked →The structures of three organic molecules are shown. H H O H H H H C O H H C C O H H C C C O H H H H H H Which description of the three molecules is correct? they all have they…
Answer this question and get it marked →Petroleum is separated into fractions by fractional distillation. Which row describes a use of the named fraction? fraction use A bitumen fuel for ships B refinery gas jet fuel C…
Answer this question and get it marked →Which statement about alkanes is correct? A They are saturated. B They are very reactive. C They contain carbon, hydrogen and oxygen only. D They contain double bonds.
Answer this question and get it marked →What is the approximate volume of nitrogen in 200 cm3 of air? A 20 cm3 B 40 cm3 C 80 cm3 D 160 cm3
Answer this question and get it marked →The apparatus used to investigate the rate at which hydrogen gas is given off when a piece of magnesium reacts with dilute hydrochloric acid is shown. hydrogen gas magnesium and…
Answer this question and get it marked →Which diagram shows the displayed formula of ethanol? A B H O H H H H C C O H H C C C O H H H H H C D H H H H O H C C O H H C C C O H H H H H
Answer this question and get it marked →Ethane is used as a fuel. Which equation shows the complete combustion of ethane? A 2C2H6 + 7O2 → 4CO2 + 6H2O B 2C2H6 + 5O2 → 4CO + 6H2O C C2H4 + 3O2 → 2CO2 + 2H2O D C2H4 + 2O2 →…
Answer this question and get it marked →The equation for the reaction of aqueous calcium nitrate and aqueous sodium hydroxide is shown. Ca(NO3)2(aq) + 2NaOH(aq) → Ca(OH)2(s) + 2NaNO3(aq) Which process is used to remove…
Answer this question and get it marked →The results of two tests on aqueous compound X are given. test result warm with aluminium foil and ammonia is produced aqueous sodium hydroxide aqueous sodium hydroxide brown…
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