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10/16/12
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10/16/12. Why do you think the rules and routines are being reemphasized today?. The Periodic Table. Dmitri Mendeleev. Russian Chemist. He discovered similarities in elements. Properties included atomic mass, density, color, melting point and bonding power.
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10/16/12
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10/16/12 • Why do you think the rules and routines are being reemphasized today?
Dmitri Mendeleev Russian Chemist
Properties included atomic mass, density, color, melting point and bonding power.
He made elements fit into columns. Empty spaces were elements not yet discovered….
Henry Moseley Arranged elements by atomic number, not mass.
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