Unit 4 Review

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Across
  1. 4. Group 1 elements that are the most reactive of all metals
  2. 11. subcategory that Lanthanides & Actinides are in
  3. 12. elements on the stair step
  4. 13. Many are gasses at room temperature
  5. 16. Most reactive nonmetals
  6. 17. Elements only known to exist because the nuclei are manufactured by humans
  7. 18. Vertical columns
Down
  1. 1. = group with a name
  2. 2. Elements want 8 electrons in their outer shell
  3. 3. Superheavy elements that may or may not actually exist, but are predicted by the periodic table
  4. 5. Group 3 - 12 (mostly) elements
  5. 6. Group 2 elements
  6. 7. Table where elements are organized by increasing atomic number (number of protons)
  7. 8. Horizontal rows
  8. 9. Table Arranged by Atomic Mass
  9. 10. Ductile & Malleable elements
  10. 14. EXTREMELY stable because outer electron shell is full
  11. 15. Table Arranged by Atomic Number