Across
- 3. Atomic number of 20
- 4. 6th most common element in the universe
- 5. 1st element on the Periodic Table of Elements
- 8. Bananas are high in this element
- 10. Symbol Na
- 11. Symbol Cl
- 12. 2nd lightest noble gas
- 13. Symbol Al
- 14. 2nd most common element in the universe
Down
- 1. 20% of an organism’s weight
- 2. Symbol N
- 6. Named in honor of Einstein
- 7. Atomic number of 74
- 9. Per Teodor Cleve independently discovered this element in 1878
- 15. Atomic number of 82