Properties of Aluminium

Aluminium is a shiny, silvery coloured metal. a)Give 3 other physical properties.

b) Give an equation for the reaction of aluminium with oxygen.

c) Complete and balance: Al + O2 à ______________

d) Complete and balance: ____ + HCl à AlCl3 + H2 (g)

Aluminium

3. Read the following and fill in the gaps using the keywords:

Keywords: anions, cations, cathode, anode, aluminium, ions, reduced, oxidised, electrolysis, electricity, 3e-,O2 ,

Aluminium is made by a process called electrolysis of aluminium oxide (alumina) which comes from the ground as an ore called bauxite. The alumina is placed in an electrolysis cell or pot and electricity is passed through it while being heated. Large amounts of ____________ are needed for the process to provide electrons for the reduction of the aluminium ions (Al3+) to the metal, aluminium.

During the e process aluminium ions (Al3+) are reduced to aluminium metal at the negative electrode (cathode) and the _________ ions are oxidised to oxygen gas at the positive carbon electrode (__________). The oxygen then slowly reacts with the carbon and is oxidised to carbon dioxide gas.

At the cathode(-) : Al+3 + __________ à Al ( aluminium cations are reduced to aluminium )

At the _________(+) 2O-2 - 4 e- à _______ (g) (_______ anions are ______________ to oxygen)

The ____________ is molten (liquid) when it is produced in the electrolysis cell and is then run off through a pipe to a container to solidify at room temperature into solid aluminum ingots ( like bricks).

Properties of Aluminium

Aluminium is a shiny, silvery coloured metal. a)Give 3 other physical properties.

b) Give an equation for the reaction of aluminium with oxygen.

c) Complete and balance: Al + O2 à ______________

d) Complete and balance: ____ + HCl à AlCl3 + H2 (g)