Across
- 3. elements that conduct electricity and heat
- 5. letters representing elements
- 6. basic unit of the periodic table
- 8. negatively charged particle
- 10. neutral particles in an atom
- 12. highly reactive metals in group 1
- 13. positively charged particle in an atom.
- 14. horizontal rows in the table
Down
- 1. has to do with salt
- 2. metals in the center of the table
- 4. gas stable gases like helium and neon
- 7. elements that do not conducts well
- 9. vertical columns in the table
- 11. reactive elements in group 17
- 12. related to atoms