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Teachers have been getting a right kicking recently and it's not fair. So, let's hear it for the teachers who've inspired you, made you laugh, or helped you to make massive explosions in the chemistry lab. (Thanks to Godwin's Lawyer for the suggestion)
( , Thu 17 Mar 2011, 11:18)
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I never delved that far into it. So far as I think, if an element's name ends in "-um" then its radioactive, i.e. polonium, radium, uranium etc.
Well, apart from aluminium. I'm not that daft.
( , Mon 21 Mar 2011, 22:15, 1 reply)
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( , Mon 21 Mar 2011, 22:20, closed)
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