Across
- 3. the main ingredient in bleach
- 4. a vital electrolyte for your body (K)
- 9. ______ chloride
- 10. 78% of Earth's atmosphere
- 13. used to produce polytetrafluoroethylene
- 17. used in 10% of gunpowder mixture
- 18. also known as Be in the P.T
- 19. Used in RGB
- 20. Most radioactive Element
Down
- 1. acts as a shielding gas in metal fabrication
- 2. 99% stored in your bones and teeth
- 4. 85% is stored in your bones
- 5. Used in beverage cans alu____
- 6. Vital mineral for your body Mg
- 7. used as a hyperpure semiconductor material for electronics
- 8. Has an atomic number of 5
- 11. Top left of the periodic table
- 12. One of the causes of global warming
- 14. Used in most phone batteries
- 15. We breath it in
- 16. Opposite side of hydrogen