Chemistry Crossword

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Across
  1. 3. Negative Subatomic Particle
  2. 7. Number of protons and Neutrons in an element
  3. 9. Up and down on the periodic table
  4. 11. Neutral Subatomic Particle
  5. 12. Solid to gas without being a liquid
  6. 15. Water
  7. 16. Most stable elements
  8. 17. Milk is an example of this kind of mix
  9. 18. Positive Subatomic Particle
Down
  1. 1. Left and right on periodic table
  2. 2. Iron
  3. 4. Gas to a solid without being a liquid
  4. 5. Gas to a liquid
  5. 6. Number of protons in an element
  6. 8. Solid,Liquid,and Gas
  7. 10. Something with mass or volume
  8. 13. Center of an Atom
  9. 14. Trail mix is an example of this kind of mix