Across
- 3. Non-flammable noble gas that makes up just under 1% of Earth’s atmosphere
- 6. Found in pools
- 7. Found in fruits and vegetables like bananas, apricots, spinach, and potatoes
- 12. Has “C” as a periodic symbol
- 14. Makes balloons float
- 15. Seeds, nuts, and legumes contain a lot of this element
- 16. The first element of the periodic table
- 17. Flammable solid found in the second group and second period of the periodic table of elements
- 19. Makes up more than half of the atmosphere's gas
- 20. Highly reactive element found in DNA, RNA, and ATP
Down
- 1. Metalloid with fourteen protons
- 2. Dairy products like milk contain this element
- 4. Provides the saltiness in salt
- 5. Element number ten on the periodic table
- 8. Highly reactive gas that is in the air we breathe
- 9. Commonly found in toothpaste, the ninth element
- 10. Has the highest boiling point of the metalloids and five protons
- 11. When mixed with hydrogen, this element creates a “rotten egg” smell
- 13. Recyclable soft metal often found in tin foil
- 18. Has three protons and three neutrons