Crossword Puzzle for Atomic Structure

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Across
  1. 2. The range of frequencies of electromagnetic radiation
  2. 4. atoms has an equal number of electrons and protons
  3. 6. Sub-atomic particles with a +1 charge
  4. 10. wavelength times frequency
  5. 14. the emission of electrons when electromagnetic radiation, such as light, hits a material
  6. 16. Atoms with a negative charge have more electrons than protons
  7. 17. The sum of protons and neutrons in a particular atom of an element
  8. 19. Atoms with the same number of protons but different numbers of neutrons
  9. 20. an element with the atomic mass of 58.933, 27 protons and electrons, and 32 neutrons
  10. 21. Rutherford shot ______ particles t a very thin sheet of gold foil
  11. 22. atomic symbol Ca
  12. 23. wavelengths determine the frequency of this
  13. 25. The rate at which current changes direction per second (measured in hertz)
  14. 27. The distance between identical points or adjacent crests in the adjacent cycles of a waveform signal (measured in meters)
  15. 29. an element with the atomic mass of 196.97, 79 protons and electrons, and 118 neutrons
  16. 30. an element with an atomic mass of 83.798, 36 protons and electrons, and 48 neutrons
  17. 32. the quantum mechanical composition of the atom shows the _________ of finding electrons within an electron cloud of an atom
  18. 34. Color with higher energy and higher frequency
  19. 35. all __________, including visible light, travel at the speed of 3.00 x 10^8 m/s in a vacuum
  20. 37. positively charged atoms will ________ positively charged nuclei
  21. 39. A tiny object made entirely of protons and neutrons
  22. 42. ​the region of negative charge surrounding an atomic nucleus that is associated with an atomic orbital
  23. 43. when an atom absorbs energy and electrons move from ground state to this state
Down
  1. 1. when an atom emits energy and electrons move from excited state to this state
  2. 3. Everything is made up of
  3. 5. Atoms with a positive charge have fewer electrons than protons
  4. 7. Gold Foil Experiment was made by
  5. 8. basic unit of energy
  6. 9. the innermost shell of electrons surrounding an atomic nucleus and constituting the lowest available energy level for the electrons
  7. 11. a species of atoms that have a given number of protons in their nuclei
  8. 12. Sub-atomic particles with a zero charge
  9. 13. the number of protons
  10. 15. Minimum amount of energy that can be gained or lost by an atom
  11. 17. abbreviations used in chemistry for chemical elements, functional groups and chemical compounds
  12. 18. Smaller sub-atomic particles than protons and neutrons with a charge of -1
  13. 19. An atom that has gained or lost one or more electrons
  14. 24. the number written as a right superscript
  15. 26. element with the atomic mass of 56 (when rounded to the nearest whole number)
  16. 28. the wavelength region from about 400 to 700nm
  17. 31. the atomic mass of helium when rounded to the nearest whole number
  18. 33. number of electrons in a Boron ion with a +2 charge
  19. 36. letter that atomic mass number is represented by
  20. 38. letter that atomic number is represented by
  21. 40. Color with lowest energy and lowest frequency
  22. 41. atoms that has enough binding energy to hold the nucleus together permanently