Across
- 2. diamond and graphite
- 5. an intersection in a venn diagram
- 9. the sun in the solar system
- 10. forces in graphite
- 11. He Ne Ar
- 12. more protons than electron
- 13. determines the position of an element
- 14. electron sea model
Down
- 1. positive
- 2. more electrons then protons
- 3. p + n
- 4. outermost shell
- 6. one type of atom
- 7. lightest particle in an atom
- 8. fluorine chlorine bromine
- 13. Li Na K