Across
- 2. outer electrons
- 6. a bond between two nonmetals
- 8. the number in front of the formula
- 11. the columns on the periodic table
- 14. the number of protons in an element
- 15. formed when two or more atoms of an element join together
Down
- 1. the number after a symbol; the number of atoms of each element
- 3. the total number of protons and electrons in an element
- 4. a subatomic particle with a neutral charge
- 5. a subatomic particle with a negative charge
- 7. a subatomic particle with a positive charge
- 9. type of molecule where atoms of two or more elements combine (ex:C02)
- 10. an abbreviation of the element name
- 12. a bond between a metal and nonmetal
- 13. the rows on the periodic table