1 1 Iron is extracted from iron(III) oxide in a blast furnace. Explain why air is blown into the blast furnace. .................................................................................................................................................. .................................................................................................................................................. [1] [Total: 1] 2 Steel is an alloy of iron. (a) Choose two substances from the list that are used in the conversion of iron from the blast furnace into steel. calcium oxide carbon dioxide hydrogen nitrogen oxygen silicon(IV) oxide sulfur dioxide 1 ........................................................................................................................................ 2 ........................................................................................................................................ [2] (b) State the meaning of the term alloy. ........................................................................................................................................... ........................................................................................................................................... [1] [Total: 3] 2 3 The table shows the rates of reaction of four metals with steam. metal rate of reaction magnesium fast nickel slow sodium very fast tin very slow Put the four metals in order of their reactivity. Put the least reactive metal first. least reactive most reactive [2] [Total: 2] 4 Complete these sentences about the extraction of iron from iron ore in a blast furnace using words from the list. air decomposed dioxide hydrogen iron monoxide oxidised reduced slag The raw materials put into the blast furnace are iron ore, limestone and ...................................... . Carbon monoxide reacts with iron(III) oxide to produce iron. In this reaction iron(III) oxide is ........................................ . Limestone decomposes to produce calcium oxide and carbon ........................................ . Calcium oxide reacts with impurities in the iron ore to form ........................................ . [4] [Total: 4] 5 State one advantage of recycling iron. .................................................................................................................................................. [1] [Total: 1] 3 6 The table shows the rates of reaction of four metals with steam. metal rate of reaction with steam zinc reacts quickly gold does not react iron reacts slowly lanthanum reacts very slowly Put the four metals in order of their reactivity. Put the least reactive metal first. least reactive most reactive [2] [Total: 2] 7 Iron is converted to steel using oxygen and one other type of compound. (a) Explain how the oxygen removes the carbon. ........................................................................................................................................... [1] (b) Choose from the list the name of the other type of compound used to convert iron into steel. acidic oxide alcohol basic oxide hydrocarbon ........................................................................................................................................... [1] [Total: 2] 8 Sulfuric acid is manufactured by an industrial process. Sulfur is obtained from sulfur-containing metal ores. The sulfur in the metal ore is converted to sulfur dioxide which is then oxidised to sulfur trioxide as shown. 2SO2(g) + O2(g) ⇌ 2SO3(g) 4 (a) Name a metal ore which contains sulfur. ........................................................................................................................................... [1] (b) Describe the process which converts metal ores to sulfur dioxide. ........................................................................................................................................... [1] [Total: 2] 9 Aluminium is extracted from its ore by electrolysis. Name the ore of aluminium which consists mainly of aluminium oxide. .................................................................................................................................................. [1] [Total: 1] 10 Aluminium is more reactive than copper. When aluminium is added to aqueous copper(II) sulfate, no immediate reaction is seen. Explain why. .................................................................................................................................................. [1] [Total: 1] 11 Nitrates decompose on heating. Write the chemical equation for the reaction when solid sodium nitrate is heated. .................................................................................................................................................. [2] [Total: 2] 12 Write the chemical equation for the reaction when solid magnesium nitrate is heated. .................................................................................................................................................. [2] [Total: 2] 13 Aluminium ore contains aluminium oxide. Aluminium is extracted from aluminium oxide by electrolysis. Explain why aluminium is extracted by electrolysis and not by reduction with carbon. .................................................................................................................................................. .................................................................................................................................................. [1] [Total: 1] 5 14 Sodium is a metal in Group I of the Periodic Table. (a) Give two physical properties of all metals. 1 ....................................................................................................................................... 2 ....................................................................................................................................... (b) [2] Give one physical property of Group I metals that is different from most other metals and state how it is different. ........................................................................................................................................... ........................................................................................................................................... [1] [Total: 3] 15 Aluminium is used for electric cables. State one other use of aluminium. Give a reason for this use in terms of the properties of aluminium. use of aluminium ..................................................................................................................... reason for this use ................................................................................................................... [2] [Total: 2] 16 Aluminium ore contains aluminium oxide. Name the main ore of aluminium. .................................................................................................................................................. [1] [Total: 1] 17 Zinc is a metal. Give three physical properties of metals. 1 ............................................................................................................................................... 2 ............................................................................................................................................... 3 ............................................................................................................................................... [3] [Total: 3] 6 18 Zinc is a metal. Give three physical properties of metals. 1 ............................................................................................................................................... 2 ............................................................................................................................................... 3 ............................................................................................................................................... [3] [Total: 3] 19 A list of substances is shown. aluminium oxide carbon dioxide glucose chlorine iron(III) oxide diamond limestone ethanol nitrogen oxygen Answer the question using the list of substances. State which substance is a gas used to convert iron into steel. .................................................................................................................................................. [1] [Total: 1] 20 A list of substances is shown. aluminium oxide carbon dioxide glucose chlorine iron(III) oxide limestone diamond ethanol nitrogen oxygen Answer the question using the list of substances. State which substance is the main constituent of bauxite. .................................................................................................................................................. [1] [Total: 1] 21 A list of substances is shown. aluminium oxide glucose carbon dioxide carbon monoxide iron(III) oxide limestone Answer the questions using the substances in the list. Each substance may be used once, more than once or not at all. State which substance is: chlorine nitrogen copper oxygen 7 (a) a product of respiration ........................................................................................................................................... [1] (b) the main constituent of hematite ........................................................................................................................................... [1] (c) an element which has a sulfate that is used to test for water ........................................................................................................................................... [1] (d) a colourless toxic gas ........................................................................................................................................... [1] (e) a reactant in fermentation ........................................................................................................................................... (f) [1] a reducing agent in the extraction of iron ........................................................................................................................................... [1] (g) a conductor of electricity when solid ........................................................................................................................................... [1] (h) a gas that is approximately 21% of clean, dry air. ........................................................................................................................................... [1] [Total: 8] 22 The symbols of the elements of Period 3 of the Periodic Table are shown. Na Mg Al Si P S Cl Ar Write the symbol of the element which is found in the ore zinc blende. .................................................................................................................................................. [1] [Total: 1] 23 State three general physical properties common to most metals. 1 ............................................................................................................................................... 2 ............................................................................................................................................... 3 ............................................................................................................................................... [3] 8 [Total: 3] 24 Stainless steel is an alloy. Give one use of stainless steel. .................................................................................................................................................. [1] [Total: 1] 25 Place these metals in order of their reactivity with oxygen. copper magnesium potassium zinc Put the least reactive metal first. least reactive most reactive [2] [Total: 2] 26 Name the element which is added to molten iron to improve impurities in the steel making process. .................................................................................................................................................. [1] [Total: 1] 27 Chromium conducts electricity and is shiny. Give two other physical properties of chromium that are characteristic of all metals. 1 ............................................................................................................................................... 2 ............................................................................................................................................... [2] [Total: 2] 9 28 (a) Use words from the list to complete these sentences about how steel is made from iron. acidic basic chlorides methane neutral nitrogen oxides oxygen sulfates A gas is blown through the molten iron. The name of this gas is ..................................... Acidic gases are formed. These acidic gases react with .................................................. [3] 28 (b) State one use of mild steel. ........................................................................................................................................... [1] [Total: 4] 29 The table compares the ease of reduction of four metal oxides when heated with carbon. metal oxide ease of reduction aluminium oxide not reduced at 2080 °C nickel(II) oxide reduced at 540 °C titanium(IV) oxide reduced at 1600 °C zinc oxide reduced at 850 °C Put the four metals in order of their reactivity. Put the least reactive metal first. least reactive most reactive [2] [Total: 2] 30 Iron is extracted in a blast furnace using a mixture of iron ore, coke (carbon), air and calcium carbonate (limestone). Give two reasons why air is blown into the blast furnace. 1 ............................................................................................................................................... 2 ............................................................................................................................................... [2] [Total: 2]
