UNIT 4 PERIODIC TABLE

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Across
  1. 1. vertical column of the periodic table
  2. 3. horizontal row of the periodic table
  3. 5. element that appears dull, a poor conductor of heat and electricity
  4. 8. inner transition metal in the bottom of the bottom two rows of the periodic table
  5. 11. element in groups 3-12
  6. 13. element in the bottom two rows; if in the first row, also called lanthanide, or if in the second row, also called actinide
  7. 16. element in group 2
  8. 17. consists of two atoms of the same element that are chemically bonded together
Down
  1. 2. element in columns 1, 2, and 12-18 (also, main-group element)
  2. 4. electrons on the outermost energy level of an atom
  3. 6. is an electrically charged atom or molecule (contains unequal numbers of protons and electrons)
  4. 7. element that conducts heat and electricity moderately well, and possesses some properties of metals and some properties of nonmetals
  5. 9. inner transition metal in the top of the bottom two rows of the periodic table
  6. 10. element that is shiny, malleable, and a good conductor of heat and electricity
  7. 12. element in group 1
  8. 14. element in group 18 (also, inert gas)
  9. 15. element in group 17