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