2 1 Which row describes the arrangement and movement of particles in a liquid? arrangement of particles movement of particles A touching and regular vibrating B touching and random moving around each other C touching and regular moving around each other D touching and random moving very fast 2 A mixture is separated using the apparatus shown. mixture funnel filter paper What is the mixture? A aqueous copper(II) sulfate and aqueous sodium chloride B aqueous copper(II) sulfate and copper C copper and sulfur D ethanol and ethanoic acid 3 Which statement about paper chromatography is correct? A A solvent is needed to dissolve the paper. B Paper chromatography separates mixtures of solvents. C The solvent should cover the baseline. D The baseline should be drawn in pencil. © UCLES 2021 0620/11/M/J/21
3 4 Element X has 7 protons. Element Y has 8 more protons than X. Which statement about element Y is correct? A Y has more electron shells than X. B Y has more electrons in its outer shell than X. C Y is in a different group of the Periodic Table from X. D Y is in the same period of the Periodic Table as X. 5 A covalent molecule Q contains only six shared electrons. What is Q? A ammonia, NH3 B chlorine, Cl 2 C methane, CH4 D water, H2O 6 Which row describes how an ionic bond forms between a sodium atom and a chlorine atom? sodium atom chlorine atom A two electrons are lost two electrons are gained B one electron is gained one electron is lost C two electrons are gained two electrons are lost D one electron is lost one electron is gained 7 Which diagram shows the structure of an alloy? A B C D © UCLES 2021 0620/11/M/J/21 [Turn over
4 8 Methane burns in oxygen to produce carbon dioxide and water. What is the balanced equation for this reaction? A CH4 + 2O2 2CO2 + 2H2O B CH4 + 2O2 CO2 + 2H2O C CH4 + 2O2 CO2 + H2O D CH4 + O2 CO2 + 2H2O 9 What is the relative formula mass of magnesium nitrate, Mg(NO3)2? A 74 B 86 C 134 D 148 10 In separate experiments, electricity was passed through concentrated aqueous sodium chloride and molten lead(II) bromide. What would happen in both experiments? A A halogen would be formed at the anode. B A metal would be formed at the cathode. C Hydrogen would be formed at the anode. D Hydrogen would be formed at the cathode. 11 Steel core aluminium cables are used for overhead electricity cables. Which statement explains why these cables are used? A Aluminium conducts electricity only when it surrounds a steel core. B Aluminium conducts electricity and the steel core makes the cable stronger. C Steel conducts electricity and is surrounded by aluminium because aluminium is an insulator. D Steel conducts electricity and is surrounded by aluminium to stop the steel from corroding. © UCLES 2021 0620/11/M/J/21
5 12 The complete combustion of propane is exothermic. The equation for this reaction is shown. C3H8 + 5O2 3CO2 + 4H2O Which energy level diagram represents the complete combustion of propane? A B C3H8 + 5O2 3CO2 + 4H2O energy energy 3CO2 + 4H2O C3H8 + 5O2 progress of reaction progress of reaction C D 3CO2 + 4H2O C3H8 + 5O2 energy energy C3H8 + 5O2 3CO2 + 4H2O progress of reaction progress of reaction 13 Which changes occur when hydrogen is burned in oxygen? energy change product A endothermic H2O only B endothermic H2O and CO2 C exothermic H2O only D exothermic H2O and CO2 © UCLES 2021 0620/11/M/J/21 [Turn over
6 14 When sulfur is heated it undergoes a ......1...... change as it melts. Further heating causes the sulfur to undergo a ......2...... change and form sulfur dioxide. Which words complete gaps 1 and 2? 1 2 A chemical chemical B chemical physical C physical chemical D physical physical 15 Zinc reacts with an acid to form a gas. The volume of gas produced is measured at intervals. The results are shown as curve Z. The reaction is repeated in the presence of a catalyst. Which curve shows the results for the catalysed reaction? A B volume of gas formed Z C D time 16 Which statement is correct? A When anhydrous copper(II) sulfate is heated its colour changes to a deeper blue. B When hydrated copper(II) sulfate is heated its colour changes to a deeper blue. C When water is added to blue cobalt(II) chloride paper it turns pink. D When water is added to pink cobalt(II) chloride paper it turns blue. © UCLES 2021 0620/11/M/J/21
7 17 Three separate experiments are carried out on an aqueous solution of S. The results are shown. 1 Magnesium does not react with the solution. 2 A gas is given off when ammonium sulfate is heated with the solution. 3 Methyl orange turns yellow when added to the solution. What is S? A hydrochloric acid B sodium hydroxide C sodium chloride D sulfur dioxide 18 Element X forms an oxide, XO, that neutralises sulfuric acid. Which row describes X and XO? element X nature of oxide, XO A metal acidic B metal basic C non-metal acidic D non-metal basic 19 Copper(II) sulfate is prepared by adding excess copper(II) oxide to warm dilute sulfuric acid. Which purification methods are used to obtain pure solid copper(II) sulfate from the reaction mixture? 1 crystallisation 2 filtration 3 chromatography 4 distillation A 1 and 4 B 1 and 2 C 2 and 3 D 3 and 4 © UCLES 2021 0620/11/M/J/21 [Turn over
8 20 Some reactions of element M are shown. burn add water element M oxide of M solution add to purple acidified add blue litmus potassium manganate(VII) goes colourless goes red What is element M? A carbon B iron C magnesium D sulfur 21 Element X is in Group II of the Periodic Table. Which statements about X are correct? 1 X is a metal. 2 X has two electrons in its outer shell. 3 X is a liquid at room temperature. A 1 and 2 only B 1 and 3 only C 2 and 3 only D 1, 2 and 3 22 Why is helium used to fill balloons? A Helium is monoatomic. B Helium is in Group VIII of the Periodic Table. C Helium has a full outer electron shell. D Helium is less dense than air. © UCLES 2021 0620/11/M/J/21
9 23 Which row describes the trend in properties of the elements in Group I as the group is descended? melting reactivity point with water A decreases decreases B decreases increases C increases decreases D increases increases 24 An element melts at 1455 C, has a density of 8.90 g / cm3 and forms a green chloride. Where in the Periodic Table is this element found? A B C D 25 Some properties of metal J are listed. ● J does not react with cold water. ● J reacts with dilute hydrochloric acid. ● No reaction occurs when the oxide of J is heated with carbon. What is J? A copper B iron C magnesium D sodium © UCLES 2021 0620/11/M/J/21 [Turn over
10 26 Iron from a blast furnace is treated with oxygen and with calcium oxide to make steel. Which substances in the iron are removed? oxygen calcium oxide removes removes A carbon acidic oxides B carbon basic oxides C iron acidic oxides D iron basic oxides 27 Which row describes a use of the metal and explains why it is used? metal use reason A aluminium food containers good conductor of electricity B aluminium aircraft wings high density C copper cooking utensils good conductor of heat D copper electricity cables good electrical insulator 28 Ammonium chloride is heated with aqueous sodium hydroxide. damp universal indicator paper ammonium chloride and aqueous sodium hydroxide gentle heat A gas is produced which turns damp universal indicator paper blue. Which gas has been produced? A ammonia B hydrogen C oxygen D sulfur dioxide © UCLES 2021 0620/11/M/J/21
11 29 Which two gases make up approximately 99% of clean, dry air? A carbon dioxide and nitrogen B carbon dioxide and oxygen C nitrogen and oxygen D argon and nitrogen 30 A student writes three statements about potassium nitrate, KNO3. 1 The relative formula mass of KNO3 is 101. 2 Potassium nitrate contains the three essential elements for plant growth. 3 Potassium nitrate could be used as a fertiliser. Which statements are correct? A 1 and 2 only B 1 and 3 only C 2 and 3 only D 1, 2 and 3 31 Which row describes the uses of sulfur and sulfur dioxide? sulfur sulfur dioxide A extraction of aluminium food preservative B extraction of aluminium manufacture of cement C manufacture of sulfuric acid food preservative D manufacture of sulfuric acid manufacture of cement 32 A white solid Z reacts with dilute hydrochloric acid to produce a gas. The same gas is produced when compound Z is heated strongly. What is Z? A calcium B calcium carbonate C calcium hydroxide D calcium oxide © UCLES 2021 0620/11/M/J/21 [Turn over