The Periodic Table and its Trends

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Across
  1. 4. Opaque, lustrous elements that are good conductors of heat and electricity
  2. 7. Odorless, colorless nonmetals with full shells of valence electrons
  3. 8. element that exhibits some metal and some nonmetal properties
  4. 12. total number of electrons an atom gains or loses to form a chemical bond with another atom
  5. 14. Good insulators of heat and electricity and mostly gases and sometimes liquid
  6. 15. energy amount of energy required to remove an electron from an isolated atom
Down
  1. 1. six chemical elements that make up Group 1 (Ia) of the periodic table
  2. 2. total mass of particles of matter in an atom
  3. 3. six chemical elements that make up Group 2 (Is) of the periodic table
  4. 5. number of protons in the nucleus of each atom of that element
  5. 6. an atom's ability to attract shared electrons to itself
  6. 9. six chemical elements that make up Group 7 (I) of the periodic table
  7. 10. Vertical columns on the Periodic Table
  8. 11. Horizontal rows on the Periodic Table
  9. 13. The tendency of atoms to prefer to have eight electrons in the valence shell