Post on 09-Jan-2016
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JEAN-BAPTISTE-ANDRÉ JEAN-BAPTISTE-ANDRÉ DUMAS DUMAS Alyssa Rainey Alyssa Rainey
&&Heather VogtHeather Vogt
Jean-Baptiste-André Dumas1857
• French Chemist
• Born in 1800
• Used mathematics to devise a system to organize the elements in accordance to their atomic masses
• We now realize that there is no way to organize the elements in a way that is reflective of their atomic masses
• Atomic mass is not a property that characterizes elements