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Aluminium Presentation I've done my presentation on Aluminium and will be talking to you about its properties, where it's found and its uses and why it's the best material for these purposes. Aluminium. Chemical symbol Al. Atomic weight approx 27 Atomic number 13 and electronic configuration 2-8-3. Appearance- pure aluminium is a shiny silvery white material. Down to the molecular level aluminium has a polycrystalline structure where the metal has cooled from different areas of the material where. Where these areas meet are called the grain boundary. This structure gives aluminium its many properties. Density - The first thing you notice about aluminium is its relatively lightweight. It has a density of 2,7g/mm3. This is about 1/3 the weight of a piece of steel the same size. Resists Corrosion - like many other metals aluminium is very reactive in air and thus a fine layer of aluminium oxide is created on the surface. This provides...

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