Actually Matt, Aluminum (without the i) is the original English spelling. It was changed at a later date by the scientists responsible for compiling the periodic table, to bring it into line with all the other -iums 
Very interesting Cris, Thanks
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Just so this tread doesn't totally wonder off topic, although I think dmizer has his answer already, I think Acceleration could use some clarification.
Some 'common' folk I have known (not the likes of this forum, but not motorheads
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) have confused acceleration with speed or velocity. Acceleration is the rate of increasing velocity, whereas speed or velocity is the distance travelled in a specified amount of time (eg. miles in an hour, meters per second...).
Matt.