| Across |
| 5. |
was discovered in 1807 |
| 6. |
colorless gas odorless |
| 7. |
atomic number is 19 |
| 10. |
was discovered in 1775 |
| 12. |
part of halogens |
| 14. |
most abundant element on earth |
|
|
| Down |
| 1. |
discovered by sir Humphrey Davy |
| 2. |
26 neutrons and 22 protons |
| 3. |
it's atomic number is 29 |
| 4. |
luster is dull |
| 8. |
solid blue with grey metallic luster |
| 9. |
we have it in a lot of our foods. |
| 11. |
cannot be cut with a knife |
| 13. |
first metal to be discovered |
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