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CHAPTER 10

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
show Oxygen removes carbon Calcium oxide removes acidic oxides  
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Iron obtained from the blast furnace is contaminated with   show
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show Oxygen  
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show Calcium oxide and acidic  
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Iron is extracted from its ore (hematite) in the blast furnace. Which gas is produced as a waste product?   show
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show Carbon + oxygen → carbon dioxide  
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show Calcium oxide, Oxygen and heat  
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show Blowing in oxygen carbon is removed by reacting with oxygen Adding calcium oxide reacts with acidic impurities making slag  
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Four reactions that take place in the blast furnace to produce iron are shown. Which reaction is used to keep the furnace hot?   show
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Iron is extracted from hematite in the Blast Furnace. The hematite contains silica as an impurity. What reacts with this impurity to remove it?   show
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show Nitrogen  
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True or false: When iron is converted into steel, oxygen is used to oxidise the iron.   show
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show 1 Coke burns and produces a high temperature. 2 Hematite is the ore containing the iron as iron oxide. 3 Hot air provides the oxygen for the burning.  
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show Iron is more difficult to extract than copper  
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Many metals are extracted from their ores by heating the metal oxide with carbon. Which metal cannot be extracted using this method?   show
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A metal is extracted from hematite, its oxide ore. What is the metal and how is the oxide reduced   show
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show Iron  
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show Iron(III) oxide is reduced and carbon monoxide is oxidised.  
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Which property is not considered a typical metallic property?   show
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Some properties of substance X are listed. ● It conducts electricity when molten. ● It has a high melting point. ● It burns in oxygen and the product dissolves in water to give a solution with pH 11. What is X?   show
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show Their atoms lose one or more electrons when they react. Conduct electricity when molten They may be used to form alloys.  
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show Poor conductor of heat  
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show Iron  
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M is a shiny silver metal. It has a melting point of 1455 °C. Many of its compounds are green. What is metal M?   show
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show Alloys are harder and keep their shape better  
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15 A substance, X, has the following properties. 1 It has a high melting point. 2 It conducts electricity in the solid and liquid states. 3 It is malleable. 4 It had a high density. What is X?   show
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show 1. Metallic 2. An Alloy  
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show 1 Aluminum has an oxide ore. 2 Aluminum is used to make cooking utensils  
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True or falls: An aluminum alloy containing a small amount of copper is stronger than pure aluminum.   show
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show True  
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show They conduct electricity  
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show It is strong and has a high density  
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Name two statements about the general properties of metals   show
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show True  
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True or false: Stainless steel is an alloy of iron.   show
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True or false: Alloys always contain more than two metals   show
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Brass is an alloy of copper and zinc. Name one statement   show
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Element X is shiny and can be formed into a sheet by hammering. Describes the properties of element X?   show
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Which property do all metals have?   show
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Name three statement about alloys   show
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An inert atmosphere is needed in a lamp to lengthen the useful life of the metal filament. Why is argon, rather than helium, used for this purpose?   show
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show Railway lines  
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W, X and Y are metals, one is copper and one is iron. • W has a coloured oxide which can be reduced by carbon. • X has a black oxide and also found in nature as a pure metal. • Y has an oxide which cannot be reduced by carbon. What is W?   show
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Tin is a metal that is less reactive than iron and is extracted from its ore cassiterite, SnO2. Name two statements about tin?   show
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show Potassium reacts with water to form hydrogen gas  
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Which substances do not react together?   show
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The oxide of element X is reduced by heating with carbon. Element X does not react with cold water, steam or dilute hydrochloric acid. What is X?   show
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Titanium reacts with acid and cannot be extracted from its ore by heating with carbon. Where should titanium be placed in this list? magnesium zinc iron copper.   show
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A chemical engineer plans to produce hydrochloric acid. Which metal is best for the reaction container?   show
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Some metals react readily with dilute hydrochloric acid. Some metals can be extracted by heating their oxides with carbon. For which metal are both statements correct?   show
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