Periodic Table Elements Crossword Puzzle

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Across
  1. 3. members of the elements family
  2. 4. the mass of an atom
  3. 5. combine to form composite particles
  4. 7. the world is made up of these
  5. 9. a stable subatomic particle
  6. 10. the air you breath
  7. 12. founder of atomist ancient history
  8. 13. Person who made the periodic table
  9. 15. found in chlorine, bromine, and fluorine
  10. 16. you put dots next to the symbol
Down
  1. 1. there not metals
  2. 2. stuff like iron, copper, tin, platinum
  3. 6. the number of protons in the nucleus of an atom
  4. 8. bananas have a lot of this in them
  5. 11. table full of elements
  6. 14. found in clean pools