Ch 3/4 - Vanderschaff

Card Set Information

Author:
Anonymous
ID:
136791
Filename:
Ch 3/4 - Vanderschaff
Updated:
2012-02-21 15:47:30
Tags:
skipp
Folders:

Description:
Ch 3/4 - Vanderschaff
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user Anonymous on FreezingBlue Flashcards. What would you like to do?


  1. Scientists thought that all matter was composed of?
    Earth, Air, Fire, Water
  2. "Atom" means ....
    Indivisible
  3. John Dalton?
    Classified atoms by atomic mass ... Hooke and Eye Theory
  4. Dmitri Mendeleev?
    Created 1st periodic table ... Arranged atoms by increasing mass
  5. J.J. Thomson Atom?
    Plum pudding theory ... Plum = (-) Pudding = (+)
  6. Ernest Rutherford?
    Nuclear theory... Nucleus is in center and positive
  7. Niels Bohr?
    Atom is a mini solar system
  8. 3 fundamental particles, their charges and weights?
    • Proton (+) 1.673 x 10^-27 kg
    • Neutron (nuetral) 1.675 x 10^-27 kg
    • Electron (-) 9.1 x 10^-31 kg
  9. Electron binding energy is strongest in which shell?
    Innermost
  10. Name all the shells starting with innermost...
    K L M N O P
  11. The shell number of an atom is called?
    Principle Quantum Number (n)
  12. The maximum number of electrons in a shell is determined by the formula...
    2n^2
  13. An atom is stable when there are ___ electrons in the outer shell.
    8 (octet)
  14. Protons and nuetrons have smaller sub-n7clear structures called ____ held together by ____.
    Quarks / Gluons
  15. The # of electrons in the outter shell is = to it's ____ + ____ on the periodic table. This number also determines the ____ of an atom
    Group and period ... Valence
  16. Atomic # =
    (Z) / # of protons (lower number)
  17. Atomic Mass = ?
    (A) / # of protons and nuetrons (upper number)
  18. 4 atomic configurations and differences?
    • Isotope - Same atomic #, different mass
    • Isobar - Different atomic #, same mass
    • Isomer - Same atomic #, same mass
    • Isotone - Same # nuetrons, different # protons
  19. Difference between molecule and compound?
    • M - 2 or more atoms join
    • C - A molecule w/ 2 different elements
  20. What was formerly used for external beam radiotherapy?
    Cobalt-60
  21. What was used for beta therapy and was a strong gamma emitter?
    Iodine-131
  22. What are the 2 types of bonds and their differences?
    • Covalent - Outter orbital electrons shared
    • Ionic - Electrons gained or removed completely...can lose or gain a (-) charge
  23. Radioactive atoms are called...
    Radionuclides
  24. What is radioactive decay?
    A nucleus emitting particles or disentegrating in an attempt to become stable
  25. Sources of radioisotopes?
    • Uranium
    • Nuclear Reactors
  26. Radioisotopes decay by?
    Alpha or beta emission
  27. Explain alpha/betta emission...
    • A...
    • -more violent
    • -2 Protons and 2 Nuetrons joined together
    • -Loses 2 units of (+) charge and 4 units of mass

    • B...
    • -More common than Alpha
    • -Electron particle ejected
    • -Atomic # incr. by 1
    • -Nuetron converts into a proton
  28. Bq = ?
    3.7 x 10^10
  29. 2 types of ionizing radiation?
    • Particulate
    • Electromagnetic
  30. Speed of light = ?
    3 x 10^8 m/s
  31. The only difference between xrays and gamma rays is their? Explain
    • Origin.
    • Xrays - produced outside nucleus in E Shells
    • Gamma - produced from nucleus of radioisotope
  32. Half life formula?
    Quantity x (1/2) ^ (# of cycles)
  33. Define electromagnetic energy
    Form of energy emitted from an object in the form of electronic or magnetic waves traveling through space
  34. 3 other names for a photon?
    • -Atom of light
    • -Quantum
    • -Small bundle of energy
  35. Who demonstrated visible light has electronic and magnetic properties?
    James Clerk Maxwell
  36. What are the electromagnetic energy properties?
    • -Amplitude
    • -Frequency
    • -Velocity
    • -Wavelength
  37. Electromagnetic spectrum ranges from?
    10 to 10^24 Hz
  38. Photon wavelengths range from?
    10^7 to 10^-16
  39. Wavelength and Frequency are ____ proportional.
    Inversely
  40. When a photon changes course this is called?
    Refraction
  41. White light is refracted because?
    It is composed of photons w/ different wavelengths ranging from 400 to 700 nm.
  42. 2 types of invisible light
    • Ultraviolet
    • Infrared
  43. What is infrared light?
    -Photons w/ wavelengths longer than visible light, but shorter than microwaves (radiant heat)
  44. What is UV light?
    In emission spectrum between visible light and ionizing radiation...

    Responsible for molecular interactions that cause sunburns
  45. Facts about RF
    Large section is used by EMS

    Low energy / Long wavelengths

    Ham Radio --> 10m or 30m wavelengths

    A.M. Radio --> 100m wavelengths
  46. Higher energy produces ____ frequencies and ____ wavelengths...
    Higher / Shorter
  47. 3 Radiologically important regions?
    • 1.) Visible Light
    • 2.) Xrays
    • 3.) RF
  48. Types of light and xray absorption?
    • Light - Transmission, attenuation, absorption
    • Xray - Radiolucent, Radiopaque
  49. Photon energy is ____ proportional to photon frequency?
    Directly
  50. Quantum theory formula?
    E=hf
  51. 1 Joule = ?
    6.24 x 10^18 eV
  52. What is pair production?
    The conversion of energy into mass

What would you like to do?

Home > Flashcards > Print Preview