Across
- 5. material that can stop gamma radiation
- 7. the penetrating rays and particles emitted by a radioactive source
- 9. atom of the same element that has a different number of neutrons
- 11. element named after Marie Curie's home country
- 12. this element can be used to date once-living items
- 13. Two smaller nuclei combining to form a heavier, more stable nucleus
- 14. element resulting from uranium undergoing alpha decay
Down
- 1. an isotope that is radioactive
- 2. The decay in which a helium nucleus is emitted
- 3. Material that can stop alpha particles
- 4. The element resulting from Astatine going through beta decay
- 6. Larger Nucleus splitting apart into two smaller nuclei
- 8. last name of the scientist who discovered two radioactive elements
- 10. this element can be used to date inorganic items