Aluminium

Aluminium

Chapter 3 - Patterns and Properties of Metals

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You have 30 seconds or 1 minute to answer the questions, based on their level of difficulties.

Aluminium

• Aluminium located in Group III in the Periodic Table.

• Aluminium is the most common metal in the Earth's crust.

• The one major ore of aluminium is bauxite, and aluminium oxide is purified from this.

• Electrolysis of aluminium oxide produces aluminium at cathode.

Multiple Choice

Where is aluminium located in the Periodic Tanle?

• Group I

• Group II

• Group III

• Group IV

Multiple Choice

What is the common ore of aluminium?

• Hematite

• Magnetite

• Dolomite

• Bauxite

Multiple Choice

What is the method used to extract aluminium?

• Electrolysis

• Electrophoresis

• Photosynthesis

• Photolysis

Uses #1: Construction Purposes

• Aluminium is a light, strong metal and has good electrical conductivity.

• Increasingly it is being used for construction purposes.

Uses #2: Aircraft and Vehicles

• Some modern cars was built out of aluminium.

• For use in aeroplanes, it is usually alloyed with other metals such as copper.

Uses #3: Overhead Power Lines

Its low density and good conductivity have led to its use in overhead power lines.

Uses #4: Food Packaging

• Aluminium is protected from corrosion by the stable layer of aluminium oxide that forms on its surface. This protective layer stops the aluminium (a reactive metal) from reacting.

• This makes aluminium foil containers ideal for food packaging.

Uses #5: Window Frame

Aluminium is also used for external structures such as window frames because they resist weathering.

Multiple Choice

Which statement about aluminium is not correct?

• It is resistant to corrosion.

• It is strong and has high density.

• It is used in food containers.

• It is used in manufacture of aircraft.

Multiple Choice

Aluminium is the most common metal in the Earth's crust. Which is not a property of aluminium?

• low density

• resistance to corrosion

• good conductor of electricity

• poor conductor of heat