Date post: | 18-Dec-2015 |
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Obtaining and Using Metals
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Question 1
• Which pair of metals can be found in the ground as uncombined elements?
Aluminium and Copper
Sodium and Magnesium
Gold and Platinum
Iron and Silver
Wrong Answer!
An alloy
Question 2
• A rock which contains enough metal to be economically viable to extract is called…
A polymer An ore
Metallic
Wrong Answer!
Question 3
• By which process is iron extracted from iron oxide on an industrial scale?
Reduction with carbon
Filtration
EvaporationElectroysis
Wrong Answer!Explanation or correct answer here
Question 4
A mixture of metals is called…
An ore A polymer
Metallic An alloy
Wrong Answer!
Question 5
• Bronze is…
A mixture of copper and tin
An element
A compound of iron and tin
A mixture of iron and zinc
Wrong Answer!
Question 6
Which one of the following metals is ideal for use in making aircraft frames?
Gold Iron
copperAluminium
Wrong Answer!
Question 7
• When compared to iron, stainless steel is…
Softer but less brittle
Stronger and more corrosion resistant
Softer and more brittle
Exactly the same in terms of physical properties
Wrong Answer!
Question 8
• Aluminium is very resistant to corrosion because it…
Has an oxide layer, which protects the metal
Is a very unreactive metal
Is above iron in the reactivity series
Is shiny and lightweight
Wrong Answer!
Question 9
• By which process is aluminium extracted from aluminium oxide on an industrial scale?
Reduction with carbon or a carbon compound
Evaporation
Electrolysis Filtration
Wrong Answer!
Question 10
• Which of the following is classed as a smart alloy?
Stainless Steel Nitinol
BrassGold
Wrong Answer!
Congratulations!