Daiwikh's Crossword Puzzle

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Across
  1. 5. A substance that speeds up a reaction while not taking part in it
  2. 7. The compound formed when nickel reacts with iodine
  3. 8. the group in the Periodic Table with full outermost electron shells
  4. 9. The most reactive metal
  5. 12. The element with it's atomic symbol of K
  6. 13. The scientific name for the outermost electron shell
  7. 15. The only metal capable of being a gas at room temp
  8. 16. The gas that iron reacts to to form rust
Down
  1. 1. The metal used in light bulbs
  2. 2. The only non-metal that has several properties of metals
  3. 3. The name for elements that have properties of both metals and non-metals
  4. 4. The charge of a proton
  5. 6. The only gas that belongs in group one in the Periodic Table
  6. 10. A varient of an element with the same amount of protons but not neutrons
  7. 11. The amount of groups in The Periodic Table
  8. 14. The gas that the air is mostly made of