Across
- 1. elements with properties of both metals and nonmetals
- 3. the most dangerous decay
- 6. decay of an electron
- 7. radioactivity solver
- 8. positive ion
- 11. the part of the atom with most of the mass
- 13. neutrally charged particle
- 14. second to the right on the periodic table
- 18. transition metals in seperate rows
- 19. nonreactive gases
- 20. charged atom
Down
- 2. reactive metals
- 4. decay of a helium atom
- 5. causing decay
- 9. smashing atoms together to make new atoms
- 10. highly conductive elements
- 12. positively charged particle
- 15. negative ion
- 16. not very conductive elements
- 17. the smallest particle