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Chemistry

Lavoisier: element as a substance that can not be analyzed into something simpler.

John Dalton (1766-1844): chemical analysis and synthesis is governed by separation and combination of particles in fixed proportions `law of combination in multiple proportions'. Different atom species have different weights, `a different atom for each element'. Have a look at http://web.lemoyne.edu/ giunta/dalton.htmlhttp://web.lemoyne.edu/ giunta/dalton.html.



Tobias Brandes 2005-04-26