Across
- 2. It's been known since ancient times in the form of soot
- 4. The element is classified as another metal
- 7. Thee discovery is interwoven.with the discovery of stars. People believed we would never know what stars are made of.
- 8. It was first isolated in 1808
- 9. Produced in 1774
Down
- 1. A English Morris Travers discovered it in 1898 in London
- 3. People have used it for compounds for thousands of years
- 5. Its a nutrient part of the body to stay healthy
- 6. It has been used to produce blue glass