Atoms and Periodic Table Review!

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Across
  1. 2. basic unit of matter
  2. 4. these elements have properties of both metals and non metals
  3. 6. name of horizontal columns on the Periodic Table
  4. 8. number of neutrons in an atom of lithium
  5. 9. number of electrons in an atom of flourine
  6. 12. this class of elements are malleable, ductile, and are good conductors of electricity
  7. 15. positively charged particles in an atom
  8. 16. tendency of a substance to crumble or break apart when little force is applies
  9. 17. part of an atom where most of the mass comes from
Down
  1. 1. The Periodic Table is organized by what number
  2. 3. the number in an element box that is always a decimal
  3. 5. negatively charged particles in an atom
  4. 7. the way metals can be rolled into wires
  5. 10. the ability of metals to be hammered or rolled
  6. 11. charge of a neutron
  7. 13. refers to the way a metal reflects light
  8. 14. name of vertical columns on the Periodic Table