12 Questions
Why is aluminium used in the manufacture of aircraft?
Because of its low density
What is the main reason for using aluminium in the manufacture of overhead electrical cables?
Low density and good electrical conductivity
Why is stainless steel used in cutlery?
Hardness and resistance to rusting
What makes alloys harder and stronger than pure metals?
Different sized atoms or ions prevent layers from sliding over each other
What is brass a mixture of?
Copper and zinc
What is the primary reason for using copper in electrical wiring?
Good electrical conductivity and ductility
What is the main reason behind the apparent unreactivity of aluminium?
Formation of a protective oxide layer
Which of the following metals will react with dilute hydrochloric acid?
Zinc
Which barrier method prevents rusting by excluding oxygen or water?
Painting
What is the primary function of sacrificial protection in preventing corrosion of metals?
Sacrificing the more reactive metal to protect the less reactive metal
What determines the relative reactivities of metals in displacement reactions?
Position in the reactivity series
From the given reactivity series, which metal is most likely to react vigorously with cold water?
Sodium
Learn about the uses of metals based on their physical properties such as low density, good electrical conductivity, and resistance to corrosion. Explore the applications of metals like aluminium in aircraft manufacturing, overhead electrical cables, and food containers, as well as the use of copper in electrical wiring. Additionally, delve into the description of alloys and their specific properties.
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