Across
- 4. The radiation of electrons
- 5. The atomic number of an alpha particle
- 10. The spontaneous emission of radiation
- 12. A particle with a mass of approximately 1 amu
- 17. The abbreviation is amu
- 19. For boron, its __ number is 5
- 20. Gamma radiation is measured as ___ loss.
- 21. Alpha radiation emits a __ atom.
- 22. Same element, different mass
- 23. ____ change the identity of the atoms.
Down
- 1. Carbon is 99% carbon-12. Dividing 99% by 100 gives you the _____ of carbon-12.
- 2. The mass number of a beta particle
- 3. For potassium-40, it's ___ number is 40
- 6. The average atomic mass of ___ is 79.904 amu.
- 7. Massless radiation
- 8. A particle with a mass of approximately 0.0005 amu
- 9. A positively charged particle
- 11. If thorium underwent alpha decay, it would become ___.
- 13. If chromium underwent beta decay, it would become ___ .
- 14. ____ rearrange the atoms.
- 15. Find the average atomic mass by adding the ____ of each isotope.
- 16. Rays of energy or particles
- 18. For lithium, 6.94 is the ___ average of its isotopes