Structure of Matter

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Across
  1. 3. the name for the chemical formula H2O
  2. 5. type of bond that forms from sharing electrons.
  3. 6. the name for the chemical formula NH3
  4. 7. the name for the chemical formula CH4
  5. 8. an atom with a negative charge.
  6. 9. a group of atoms bonded together
  7. 10. the chemical formula for table salt.
  8. 12. atoms want a _____ outer-energy level.
  9. 14. the name for the elements in group 17
  10. 15. an atom with a positive charge.
  11. 17. the number of valence electrons in Argon.
Down
  1. 1. a combination of one or more pure substances
  2. 2. shows what something looks like.
  3. 4. the electrons in the outer-most energy level
  4. 5. a substance made of more than one element
  5. 11. name for the guy that came up with the dot diagrams.
  6. 13. atomic number 20 on your periodic table
  7. 16. type of bond that forms from transferring electrons.