RTE 1418 final exam review UPDATED
ACTUAL Questions and CORRECT
Answers
atomic structure - CORRECT ANSWER - •Nucleus - small, dense center that contains
nucleons:
Protons
Neutrons
•Orbitals (electron shells)
Electrons
protons - CORRECT ANSWER - positive charges
•Mass of 1.673 x 10-27 kg
what distinguishes one element from another - CORRECT ANSWER - number of protons
in an atom's nucleus
neutrons - CORRECT ANSWER - no charge
-Mass of 1.675 x 10-27 kg (largest)
electrons - CORRECT ANSWER - negative charges
-Mass of 9.109 x 10-31 kg (smallest)
-in continuous motion
adding or removing a proton changes - CORRECT ANSWER - the element to which the
atom belongs
adding or removing a neutron - CORRECT ANSWER - creates an isotope of a particular
element
,adding or removing an electron creates an - CORRECT ANSWER - ion
Electromagnetic Spectrum - CORRECT ANSWER - 3 scales: wavelength in meters (m),
frequency in Hertz (Hz), & energy in electron volts (eV)
ionizing EM radiations - CORRECT ANSWER - x-rays, gamma rays, & high energy
ultraviolet
what causes biologic damage to living cells - CORRECT ANSWER - ionization
Describe the relationships between energy, wavelength, & frequency of EM radiations. -
CORRECT ANSWER - •The energy & frequency of photons are directly proportional. As
frequency increases, energy increases proportionally (& vice versa)
•However, wavelength & energy are inversely proportional. As wavelength decreases, energy
increases proportionally (& vice versa)
Properties of X-Rays - CORRECT ANSWER - •Are a form of EM radiation (energy)
•Can ionize matter
•Travel in straight lines at the speed of light
•Cannot be seen or heard
•Are electrically neutral & have no mass or charge
•Are not affected by electric or magnetic fields
•Can be produced over a wide range of energies & wavelengths
•Release a small amount of heat when passing through matter
•Cannot be reflected or focused by a lens
•Cause fluorescence of certain crystals
•Produce secondary & scatter radiation
•Produce chemical & biological in matter through excitation & ionization
, a# - CORRECT ANSWER - # (atomic mass number) = nucleon
(protons + neutrons)
z# - CORRECT ANSWER - # (atomic number) = proton
Electrical Stability - CORRECT ANSWER - the # of (+) charged protons in the nucleus
equals the total # of (-) charged electrons
Electron Binding Energies - CORRECT ANSWER - determines the energy needed to eject
an electron from an atom
Repulsion-Attraction law - CORRECT ANSWER - Like charges repel•Opposite charges
attract
Inverse Square Law - CORRECT ANSWER - The force between 2 charges is inversely
proportional to the square of the distance between them
Distribution law - CORRECT ANSWER - law of distribution states that non-conductors
(such as a piece of wood) have their electrons randomly distributed throughout when electrified
•In conductors (such as a copper wire), excess electrons will be distributed on the surface,
because the electrons will try to repel one another
Concentration law - CORRECT ANSWER - Electric charges (such as electrons) will
concentrate along the sharpest curvature of a conductor's surface
Movement law - CORRECT ANSWER - Only negative charges (electrons) move along
solid conductors
ACTUAL Questions and CORRECT
Answers
atomic structure - CORRECT ANSWER - •Nucleus - small, dense center that contains
nucleons:
Protons
Neutrons
•Orbitals (electron shells)
Electrons
protons - CORRECT ANSWER - positive charges
•Mass of 1.673 x 10-27 kg
what distinguishes one element from another - CORRECT ANSWER - number of protons
in an atom's nucleus
neutrons - CORRECT ANSWER - no charge
-Mass of 1.675 x 10-27 kg (largest)
electrons - CORRECT ANSWER - negative charges
-Mass of 9.109 x 10-31 kg (smallest)
-in continuous motion
adding or removing a proton changes - CORRECT ANSWER - the element to which the
atom belongs
adding or removing a neutron - CORRECT ANSWER - creates an isotope of a particular
element
,adding or removing an electron creates an - CORRECT ANSWER - ion
Electromagnetic Spectrum - CORRECT ANSWER - 3 scales: wavelength in meters (m),
frequency in Hertz (Hz), & energy in electron volts (eV)
ionizing EM radiations - CORRECT ANSWER - x-rays, gamma rays, & high energy
ultraviolet
what causes biologic damage to living cells - CORRECT ANSWER - ionization
Describe the relationships between energy, wavelength, & frequency of EM radiations. -
CORRECT ANSWER - •The energy & frequency of photons are directly proportional. As
frequency increases, energy increases proportionally (& vice versa)
•However, wavelength & energy are inversely proportional. As wavelength decreases, energy
increases proportionally (& vice versa)
Properties of X-Rays - CORRECT ANSWER - •Are a form of EM radiation (energy)
•Can ionize matter
•Travel in straight lines at the speed of light
•Cannot be seen or heard
•Are electrically neutral & have no mass or charge
•Are not affected by electric or magnetic fields
•Can be produced over a wide range of energies & wavelengths
•Release a small amount of heat when passing through matter
•Cannot be reflected or focused by a lens
•Cause fluorescence of certain crystals
•Produce secondary & scatter radiation
•Produce chemical & biological in matter through excitation & ionization
, a# - CORRECT ANSWER - # (atomic mass number) = nucleon
(protons + neutrons)
z# - CORRECT ANSWER - # (atomic number) = proton
Electrical Stability - CORRECT ANSWER - the # of (+) charged protons in the nucleus
equals the total # of (-) charged electrons
Electron Binding Energies - CORRECT ANSWER - determines the energy needed to eject
an electron from an atom
Repulsion-Attraction law - CORRECT ANSWER - Like charges repel•Opposite charges
attract
Inverse Square Law - CORRECT ANSWER - The force between 2 charges is inversely
proportional to the square of the distance between them
Distribution law - CORRECT ANSWER - law of distribution states that non-conductors
(such as a piece of wood) have their electrons randomly distributed throughout when electrified
•In conductors (such as a copper wire), excess electrons will be distributed on the surface,
because the electrons will try to repel one another
Concentration law - CORRECT ANSWER - Electric charges (such as electrons) will
concentrate along the sharpest curvature of a conductor's surface
Movement law - CORRECT ANSWER - Only negative charges (electrons) move along
solid conductors
