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