Across
- 4. a law in chemistry
- 7. 13 electrons
- 10. Charge can be positive or negative
- 14. has more protons than elecrtrons
- 15. 6 neutrons
Down
- 1. 5 protons
- 2. metal group Li
- 3. positive charge
- 5. defines a chemical element
- 6. outermost shell
- 8. the outermost electrons
- 9. negative charge
- 11. no electrical charge
- 12. uncombined atoms
- 13. charged with electricity