Across
- 4. two or more of the same element that have the same number of protons, but different number of neutrons
- 6. Gets stopped by lead
- 9. Dividing of Nucleus
- 10. Cant go through human skin
- 12. A series of events caused by the one before
- 13. Positive Charge of 1
- 14. Neutral Charge of 0
Down
- 1. Center of an atom
- 2. The amount of protons in an atom
- 3. Gets stopped by aluminum
- 5. the ability of an atom to release mass and energy
- 7. Neutrons plus protons
- 8. Nucleus of 2 atoms combine
- 11. the time required for any specified property to decrease by half