Let's Get Chemical

123456789101112
Across
  1. 2. This element is what cooking foil is made out of
  2. 6. This element has a valley near San Fransico named after it
  3. 7. This element is found in toothpaste
  4. 10. This element is found in Bananas
  5. 11. This element is found in your favorite restaurant's "open" sign
  6. 12. This element is used to make cool-toned jewelry
Down
  1. 1. This element is what makes balloons float
  2. 3. This element is found in batteries
  3. 4. This element caused a rush of people to California in 1850
  4. 5. This element is found in pools
  5. 8. This element is what you breathe in
  6. 9. This element is how Tony Stark got his superhero name