Periodic Table Test Review

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Across
  1. 2. Positively charged subatomic particle.
  2. 5. Equal to # of p+ and e-.
  3. 8. Group of the most reactive metals
  4. 9. These are found in the nucleus of an atom.
  5. 13. Tells you how many shells are needed.
  6. 17. Neutral subatomic particle.
  7. 18. Arranged by order of inc. atomic #
  8. 19. Mass/Volume
  9. 20. Wanting to have 8 e- in outermost shell.
  10. 22. These elements lie on the stairstep line.
  11. 23. Negatively charged subatomic particle
  12. 24. Protons are found here in an atom.
Down
  1. 1. determines how many e- in the outer shell
  2. 3. This group is made of nonreactive elements.
  3. 4. Mass # - Atomic # give you this #
  4. 6. Numbered 1-18 (or 1-8) on the per.table.
  5. 7. Father of the periodic table (last name)
  6. 10. The closer the elements are, the more ___ .
  7. 11. Periods run _____.
  8. 12. Periods run this direction
  9. 14. Are dull,do not conduct electricity/heat.
  10. 15. Electrons are found here in an atom.
  11. 16. Numbered 1-7 on periodic table
  12. 21. Shiny, malleable & good conductors of heat