Unit 3: Periodic Table and Bonding

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Across
  1. 2. Unequal sharing of electrons in covalent bonds
  2. 4. Equal sharing of electrons in covalent bonds
  3. 8. Forces of attraction between molecules
  4. 10. Bonding that results from the sharing of electron pairs between two atoms
  5. 12. Horizontal rows on the periodic table
  6. 14. Elements that are good conductors of electric current and heat
  7. 16. How readily a substance combines chemically with other substances
  8. 17. Group 1 on the periodic table, very reactive
  9. 18. Arranged periodic table by mass and left holes for undiscovered elements
  10. 19. Easy to shape or bend
Down
  1. 1. Group 17 on the periodic table, very reactive
  2. 3. Vertical columns on the periodic table
  3. 5. A positively charged ion
  4. 6. Electrons on the outermost energy level of an atom, same as group number
  5. 7. A material which gives very little resistance to the flow of an electric current or thermal energy
  6. 9. Poor conductors of heat and electric current
  7. 11. Bonding that results from the electrical attraction between cations and anions
  8. 13. A term used to describe a material that can be pulled out into a long wire
  9. 15. Elements with properties that fall between those of metals and nonmetals
  10. 20. A negatively charged ion