Periodic Table Crossword

2. Used in balloons and MRI machines
7. John William Strutt helped discover this gas in 1894
8. Found in nuts, fruits, and leafy green veggies discovered in 1808
10. Essential for living organisms and is what diamonds are made of
11. Major producers of this element are phytoplankton and trees
13. Our air is around 78% of this element
14. A type of electrolyte found in fruit that monkeys like to eat
17. Found in leafy greens and dairy, used for healthy bones and teeth
19. Covers food in the oven also the most abundant metal in the earth's crust
20. Protects teeth, and too much is highly toxic

1. Used to disinfect water for swimming and drinking
3. Looks metallic Gray with atomic number 4
4. Found in every human cell, symbol is 16th in the alphabet
5. This element, we need to drink
6. A famous valley, shares this name
9. Deficiencies can cause muscle cramps atomic mass is 24.305
12. A type of gas that helped the 1980s glow
15. A mineral that enhances food's flavor and is commonly added to processed foods
16. In its pure form it does not smell like rotten eggs
18. Discovered in 1817 and is commonly used in batteries