Unit 4: Chemical Bonding

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Across
  1. 4. the element that is essential to life and is the backbone of biochemistry
  2. 7. the Greek prefix the name covalent molecules with 5 subscript
  3. 8. the word for polar covalent bonds meaning that they are between nonpolar and ionic bonds
  4. 11. ____ bonding: positive ions in a sea of electrons
  5. 13. a chemical bond that involves the sharing of electrons with 2+ nonmetals
  6. 14. NH3 is also called nitrogen ____
Down
  1. 1. atoms have very similar/ the same electronegativity, so they pull on the electrons equally
  2. 2. the distribution of electrical charge among the atoms
  3. 3. electrons shared unqeually
  4. 5. changed ending of of monatomic anions (usually nonmetals)
  5. 6. elements with _____ electronegativity are electron acceptors (fluorine)
  6. 9. when a bond is formed, energy is released into the surrounding
  7. 10. atomic ____ is when an atom has a balanced nucleus with a full outer shell of electrons
  8. 12. The Roman numeral tells us the _____ for the transition metal
  9. 13. when writing the formula for ionic compounds, always write the symbol for the _____ first