The Periodic Table

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Across
  1. 4. An element when combined with oxygen and turned into ions help in plant growth
  2. 5. Needed for the development of bones in the body
  3. 9. An element in the noble gas criteria who's element symbol is He
  4. 10. An element starting with I that can exist as a diatomic molecule
Down
  1. 1. A halogen with the element symbol of Cl
  2. 2. Is the basic need for cell respiration
  3. 3. What is the most reactive element in the periodic table
  4. 6. When turned into ions can help with plants making chlorophyll
  5. 7. A halogen who's element symbol is Br
  6. 8. element found in salts in your fries