Across
- 3. introduced structure of the atom
- 7. number of neutrons
- 9. Thompson the first person to introduce the atom
- 10. most of the atom
- 12. neutral charge
- 14. outer structure of the atom
- 15. number same number as protons and electrons
- 16. group shows
- 17. meaning undivided or uncut
Down
- 1. the most aundant atom in the milky way
- 2. outer electron number
- 4. center of the atom
- 5. the atoms number of atoms our body is made up of
- 6. only way to see an atom
- 8. negative charge
- 9. who reintroduced the atom
- 11. positive charge
- 13. period shows