Across
- 3. the bodys most abundant mineral, crucial to build strong bones and teeth
- 6. the lightest metal and found in a certain type of battery
- 7. in the air you breathe OUT
- 8. known for it's appealing rainbow colored hopper crystals
- 10. The fourth element, is toxic if inhaled
- 11. Named after scientist Marie Curie
- 12. 21 percent of the air you breathe
- 14. _ of the periodic table
- 15. used to harden lead in batteries. Has the atomic number 51
Down
- 1. it can melt in your hand, yet has a high boiling point
- 2. a vital trace mineral, essential for immunity, cell growth, wound healing, and DNA synthesis
- 4. the second most abundant mineral in the body, starts with P.
- 5. A dense radioactive metal
- 9. the universes most abundant element
- 13. glows reddish orange under electricity