Across
- 2. When the atoms are split apart.
- 5. The determining factor that makes elements.
- 7. The combination of atoms.
- 9. The radioactive element used in the atomic bomb.
- 11. Where the atomic bomb was built.
- 15. The type of radiation that is least deadly.
- 16. Where the atomic bomb first dropped.
- 19. The name of the project made to create the first nuclear weapon.
- 20. The harmful substance created by unstable atoms.
- 21. The things sorted on the periodic table.
Down
- 1. The war where the atomic bomb was dropped.
- 3. The study of atoms.
- 4. The thing the entire universe is made out of.
- 6. The Danish physicist.
- 8. The type of radiation that is most deadly.
- 10. The table where all the elements are sorted.
- 12. The type of radiation used in health.
- 13. The weapon dropped on two Japaneses cities.
- 14. The type of scientist dealing with physics.
- 17. The radioactive element used to coat watches.
- 18. The person who discovered Radium.
