Across
- 5. the element with the highest melting point
- 6. this element was once used in thermometers
- 7. this element is necessary for combustion
- 8. this element was named for a US state
- 9. the most positively charged element
- 10. the first element predicted by Dmitri Mendeleev
Down
- 1. the most common element in the universe
- 2. the lab-created element used in atomic bombs
- 3. the element that defines an organic molecule
- 4. this element is named after a European country