Chemistry Crossword!

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Across
  1. 7. I'm absolutely, 100%, without a doubt positive!
  2. 9. Two energy shells; Three valence electrons.
  3. 10. A model citizen in the world of chemistry.
  4. 14. These can be changed when balancing equations.
  5. 15. When the products are a combination of the reactants.
  6. 20. Electrons in these bonds are free to roam.
  7. 21. Metals with one valence electron.
  8. 23. Valence electrons in a Cesium atom.
  9. 24. If we were all covalent maybe we'd be more willing to...
  10. 26. They get rearranged in a chemical reaction.
  11. 27. Mendeleev predicted more would be found.
  12. 30. When the reactants get broken into smaller particles.
  13. 35. The type of dots that mean valence electrons.
  14. 37. A negative ion.
  15. 38. The heaviest natural element.
  16. 41. The tiny numbers in a chemical equation.
  17. 42. The...of an atom is like a fly in a cathedral!
  18. 43. Most bonds between nonmetals.
Down
  1. 1. The universe is mostly made of this substance.
  2. 2. They're organized by # of electron shells.
  3. 3. Valence electrons hang out here.
  4. 4. They keep us from falling apart.
  5. 5. A neutron's charge.
  6. 6. Sixth group; Third period.
  7. 8. He, Ne, Ar, Kr, etc...
  8. 11. Electrons might have more friends if they weren't so...
  9. 12. the number of protons in an atom.
  10. 13. Bromine and Mercury.
  11. 15. It makes up most of an atom's volume, and yours too.
  12. 16. They're organized by # of valence electrons.
  13. 17. An equation that obeys the law of conservation.
  14. 18. Would also feel pretty comfortable in a position above Beryllium.
  15. 19. Where the heavier elements get cooked up.
  16. 22. Conservation of mass is a……not just a guideline!
  17. 25. The sum of an atom's protons and neutrons.
  18. 28. # of Br ions that will easily bond with Magnesium.
  19. 29. The boundary between metals and nonmetals.
  20. 31. A pattern that is repeated over and over, like weeks in a calendar.
  21. 32. This type of substance is produced in a chemical reaction.
  22. 33. A positive ion.
  23. 34. The attraction between two ions.
  24. 36. Really? Na with Cl? That is so...!
  25. 39. Nickname for a chemical reaction.
  26. 40. An "overweight" atom.