Across
- 2. no charge
- 5. only one type of atom
- 7. proton and neutron home
- 9. 29th element
- 10. atoms bouncing all around
- 11. packed extremely tight together
- 12. 5th element
- 14. does not have a fixed shape
- 15. anything with mass that takes up space
- 17. type of plasma
Down
- 1. positive
- 3. Indian physicist
- 4. electron snaps off
- 5. negative
- 6. 11th element
- 8. dry ice
- 13. solid goes directly to a gas
- 16. German physicist