Chemistry Crossword Puzzle

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Across
  1. 3. gave off green flame in the flame lab
  2. 6. number below the elements symbol
  3. 8. tool used to hold objects
  4. 11. sub-atomic particles with a zero charge
  5. 12. used to protect your eyes during labs
  6. 14. element that is also a planet
  7. 15. atoms with fewer electrons then protons
  8. 17. particle of light
  9. 19. first element in the periodic table
  10. 21. number of protons hydrogen has
  11. 23. when atoms absorb energy they become
  12. 24. sum of protons and neutrons in an atom
  13. 27. element with the symbol "Na"
  14. 28. noble gas before radon
  15. 30. atoms with a negative charge are called
  16. 34. number of protons an element has is referred to as
  17. 35. element with atomic number 106
  18. 36. the length between 2 peaks in a wave
  19. 40. it is inside of milk
  20. 41. represents an element
  21. 43. atoms with the same number of protons, but different number of electrons
  22. 44. element with the symbol "FE"
  23. 45. element with atomic number 50
Down
  1. 1. sub-atomic particles with a +1 charge
  2. 2. class you are solving this crossword puzzle in
  3. 4. atoms with different numbers of protons
  4. 5. used to protect your clothes during labs
  5. 7. noble gas before argon
  6. 9. element with the symbol "Si"
  7. 10. atom that has gained or lost one or more electrons
  8. 13. sub-atomic particles with a -1 charge
  9. 16. what we breath
  10. 17. element you think of when you see a banana
  11. 18. a proton is
  12. 20. tiny object made entirely of protons and neutrons
  13. 22. determined the color of the flame in the salt
  14. 25. gem that rubidium is based off of
  15. 26. particles that are smaller than atoms
  16. 29. 2nd element found in the periodic table
  17. 31. a electron is
  18. 32. responsible for the gold foil experiment
  19. 33. tool we used to hold the fire during the flame lab
  20. 37. the shape of an s orbital
  21. 38. element with the atomic number 79
  22. 39. they make up everything
  23. 42. color of cesium when burned