Periodic Table

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Across
  1. 3. which element do we exhale?
  2. 5. mass What is above the symbol?
  3. 6. Which element uses the symbol of K?
  4. 9. What forms over 90% of Earth's crust?
  5. 10. Symbol for the 10 element?
  6. 11. Symbol for the 12th element?
Down
  1. 1. What Element has the average mass of 9.012?
  2. 2. Which element has the atomic number of 5?
  3. 4. number What is the number underneath the symbol called?
  4. 7. What do all organisms on this earth can't live without?
  5. 8. What's on top of fresh tasty fries?