Across
- 4. A metalloid element commonly found in borax and used in fiberglass.
- 6. A noble gas used in welding and as a protective atmosphere.
- 7. Essential for respiration and abundant in the Earth's crust.
- 9. A metalloid crucial for semiconductors and computer chips.
- 10. Essential for nerve function and found in bananas.
- 12. Important for bone and teeth health and found in dairy products.
- 14. A greenish gas used in disinfectants and swimming pools.
- 18. A lightweight metal used in cans, foil, and aircraft.
- 19. A highly reactive gas used in toothpaste and Teflon.
- 20. The lightest and most abundant chemical element, often found in water.
Down
- 1. The basis of organic chemistry and found in all living organisms.
- 2. A lightweight metal often used in aerospace applications.
- 3. Essential for life, found in DNA, and used in fertilizers.
- 5. A gas making up the majority of Earth's atmosphere.
- 8. A noble gas known for its use in colorful signs.
- 11. A highly reactive metal that explodes when in contact with water.
- 13. Used in alloys and known for its role in muscle function.
- 15. A metal known for its use in rechargeable batteries.
- 16. A noble gas used in balloons to make them float.
- 17. A yellow solid with a distinctive smell, often associated with volcanoes.