Across
- 2. Au is the element symbol
- 5. comes from greek word meaning heavy
- 6. seventh most common element on Earth
- 9. mentioned as far back as the Bible
- 10. atomic number of eight
- 11. 21st most common element
- 12. you can get strong bones and a healthy smile from this element
- 13. element found in Earth’s seawater
- 14. too much or too little of _____ in the body can cause health issues
- 16. composed of 75% copper and 25% Nickel
- 18. sixth most common element in the universe
Down
- 1. second most common element in universe
- 3. only element named after a cooking utensil
- 4. 78% of the air you breathe
- 5. common compounds of _____ are borax, boric acid, and borates
- 7. discovered in Mercury’s atmosphere
- 8. heavy dark liquid
- 12. comes from the latin word Carbo
- 15. Element is vital for living organisms
- 17. about two-thirds as dense as air