Across
- 4. row on the periodic table
- 5. group of 8 electrons
- 6. negatively charged ion
- 8. the mass of an atom
- 9. the number of protons in an atom's nucleus
- 13. what you use when a number is much too big
- 15. gaseous element
- 17. an element in between a metal and not
- 18. the mass of a mole
Down
- 1. reactive nonmetals
- 2. a part of the periodic table that is aptly named
- 3. type of element that is solid and usually shiny
- 7. outermost electrons
- 10. column on the periodic table
- 11. positively charged ion
- 12. large amount of atoms that shares a name with a rodent
- 14. atom that usually has a net charge
- 16. element that is not a metal