Across
- 2. Number The number of protons in an element
- 4. Clumped with neutrons in the middle of an atom and is positively charged
- 8. A subatomic atom that is neither positive nor negative
- 9. When a large atom splits into half and releases 2 or 3 neutrons
- 11. A type of radioactivity that is strong enough to penetrate skin, but gets stopped by Aluminum
- 13. The mass of a specific element
- 14. The amount of time for half of an element to go through radioactive decay
Down
- 1. A change in number of neutrons
- 3. A radioactive decay that is the weakest of the 3 and cannot even penetrate skin
- 5. The ability of an atom to emit mass and energy
- 6. The control center of a cell
- 7. Reaction When one an action takes place and affects what is around it and it continues what it did
- 10. When the nuclei of two atoms combine and make a heavier nucleus
- 12. Another type of radioactive decay that is the strongest and can only be stopped by lead