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10/16/12

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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  1. 10/16/12 • Why do you think the rules and routines are being reemphasized today?

  2. The Periodic Table

  3. Dmitri Mendeleev Russian Chemist

  4. He discovered similarities in elements

  5. Properties included atomic mass, density, color, melting point and bonding power.

  6. He made elements fit into columns. Empty spaces were elements not yet discovered….

  7. The table was still missing some elements…

  8. Henry Moseley Arranged elements by atomic number, not mass.

  9. The periodic table has columns

  10. The periodic table has rows

  11. Element Key

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