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