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PS ch 5

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Amber Dowdy

on 10 September 2012

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Transcript of PS ch 5

5.1 Organizing Elements Antoine Lavoiser Frech Chemist, grouped elements
into categories metals
earths Dmitri Mendeleev, Russian chemist "deck of cards" of the elements listed name, mass, properties arranged elements into rows in order of increasing mass, so similiar properties were in the same collumn within a collumn, mass
increases from top to bottom periodic table:
arrangement of
elements in
collumns, based
on set of properties
that repeat from
row to row He predicted that all elements had
not been discovered ~ left spaces Evidence: The closest match between Mendeleev's
prediction and actual properties of new elements
showed how useful his periodic table could be. 5.2
The Modern Periodic Table
Periodic Law:
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