Chemistry Review

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Across
  1. 3. evenly mixed
  2. 6. same number of energy levels
  3. 7. energy it takes to remove an electron
  4. 9. negatively charged ion
  5. 10. an idea that has evidence to support it
  6. 11. nonmetal and nonmetal
  7. 13. the same number of valence electrons
  8. 14. decay radioactive isotopes emit a
  9. 15. positively charged ion
  10. 16. property is something that is measurable or observed
  11. 17. structures show valence electron bonds
  12. 20. color of light
  13. 22. between metals
  14. 25. decay does NOT involve particles emission
  15. 26. spectrum range of wavelengths radiate
  16. 30. sheet with hazards and properties of a chemical
  17. 31. radius size of atom bottom left
  18. 33. property reactivity or chemical composition
  19. 35. electron jumps up a level
  20. 37. substance substance that can not be physically separated
  21. 39. property physical property that depends on the amount (size, mass, and volume)
  22. 40. metal and nonmetal
  23. 41. change element charge doesn't change mass
Down
  1. 1. fission large nuclei split to form small, stable nuclei
  2. 2. if it can dissolve in water
  3. 4. breaks down
  4. 5. location of an electron
  5. 8. charged particles
  6. 9. NH4
  7. 12. unstable isotope
  8. 18. more than 2 elements
  9. 19. jumps down a level
  10. 21. an educated guess
  11. 23. two or more substances physically combined
  12. 24. same element with different masses
  13. 27. how badly an atom want boning e-
  14. 28. NO3 -
  15. 29. property physical property that does NOT depend on the amount
  16. 32. SO4-2
  17. 34. unevenly mixed
  18. 36. fusion small nuclei to form one large nuclei
  19. 38. gives off energy