EOH 353 EXAM 2 UPDATED QUESTIONS AND ANSWERS
stable - CORRECT ANSWER✅✅✅an atom is ____ if the forces among the particles that makeup the
nucleus are balanced
unstable - CORRECT ANSWER✅✅✅an atom is ____ if these forces are unbalanced, has an excess of
nuclear energy, and protons and neutrons are unbalanced.
reach stability - CORRECT ANSWER✅✅✅unstable atomic nuclei will attempt to _____ by throwing
off protons or neutrons, as well as other particles, or by releasing energy in other forms
radioactivity/decay - CORRECT ANSWER✅✅✅the release of energy and matter that results from
changes in the nucleus of an atom
greater than 83 - CORRECT ANSWER✅✅✅what is the atomic number that makes an element
unstable/radioactive
radiation - CORRECT ANSWER✅✅✅refers to the energy and matter that is released during
radioactive decay
nonionizing radiation - CORRECT ANSWER✅✅✅has enough energy to move atoms around in a
molecule or cause them to vibrate, but not enough to remove electrons (radio waves, visible light,
microwaves)
ionizing radiation - CORRECT ANSWER✅✅✅has enough energy to knock electrons out of atoms
(ultraviolet, x ray, gamma ray)
does not regulate - CORRECT ANSWER✅✅✅for nonionizing radiation, epa _____ the nonionizing
radiation emitted by electrical devices such as radio transmitters or cell phones
protects human health - CORRECT ANSWER✅✅✅for ionizing radiation, epa ____ and the
environment from the ionizing radiation that comes from human use of radioactive elements
, alpha, beta, and gamma - CORRECT ANSWER✅✅✅types of ionizing radiation
alpha radiation - CORRECT ANSWER✅✅✅the nucleus kicks out 2 neutrons and 2 protons, mass
number changes by 4, atomic number changes by 2
short distances - CORRECT ANSWER✅✅✅alpha particles are large in mass and charge, use up most
of their energy over ____, and are unable to travel very far
beta radiation - CORRECT ANSWER✅✅✅the nucleus emits a small, fast moving, negatively charged
particle during radioactive decay
farther in air - CORRECT ANSWER✅✅✅beta particles are relatively small in mass and charge, travel
_____ than alpha particles, but can be stopped by a layer of clothing or thin substances, and can
sometimes penetrate the skin
gamma radiation - CORRECT ANSWER✅✅✅pure energy released from the nucleus whenever an
alpha or beta is emitted during radioactive decay
damage to tissue and DNA - CORRECT ANSWER✅✅✅gamma rays have no mass and can pass
completely through the body and can cause ______
3.8 days - CORRECT ANSWER✅✅✅the half life of radon
uranium decay series - CORRECT ANSWER✅✅✅uranium -> radium -> radon -> polonium -> lead
radon decay products (RDP) - CORRECT ANSWER✅✅✅source of cell damage in lungs through the
release of alpha and beta particles, short lived decay products are most significant (<30 min), static
charges, chemically reactive, solid particles, and heavy metals
plated out - CORRECT ANSWER✅✅✅charged RDPs attached to walls, floors, clothing, non-
measurable, non-breathable
stable - CORRECT ANSWER✅✅✅an atom is ____ if the forces among the particles that makeup the
nucleus are balanced
unstable - CORRECT ANSWER✅✅✅an atom is ____ if these forces are unbalanced, has an excess of
nuclear energy, and protons and neutrons are unbalanced.
reach stability - CORRECT ANSWER✅✅✅unstable atomic nuclei will attempt to _____ by throwing
off protons or neutrons, as well as other particles, or by releasing energy in other forms
radioactivity/decay - CORRECT ANSWER✅✅✅the release of energy and matter that results from
changes in the nucleus of an atom
greater than 83 - CORRECT ANSWER✅✅✅what is the atomic number that makes an element
unstable/radioactive
radiation - CORRECT ANSWER✅✅✅refers to the energy and matter that is released during
radioactive decay
nonionizing radiation - CORRECT ANSWER✅✅✅has enough energy to move atoms around in a
molecule or cause them to vibrate, but not enough to remove electrons (radio waves, visible light,
microwaves)
ionizing radiation - CORRECT ANSWER✅✅✅has enough energy to knock electrons out of atoms
(ultraviolet, x ray, gamma ray)
does not regulate - CORRECT ANSWER✅✅✅for nonionizing radiation, epa _____ the nonionizing
radiation emitted by electrical devices such as radio transmitters or cell phones
protects human health - CORRECT ANSWER✅✅✅for ionizing radiation, epa ____ and the
environment from the ionizing radiation that comes from human use of radioactive elements
, alpha, beta, and gamma - CORRECT ANSWER✅✅✅types of ionizing radiation
alpha radiation - CORRECT ANSWER✅✅✅the nucleus kicks out 2 neutrons and 2 protons, mass
number changes by 4, atomic number changes by 2
short distances - CORRECT ANSWER✅✅✅alpha particles are large in mass and charge, use up most
of their energy over ____, and are unable to travel very far
beta radiation - CORRECT ANSWER✅✅✅the nucleus emits a small, fast moving, negatively charged
particle during radioactive decay
farther in air - CORRECT ANSWER✅✅✅beta particles are relatively small in mass and charge, travel
_____ than alpha particles, but can be stopped by a layer of clothing or thin substances, and can
sometimes penetrate the skin
gamma radiation - CORRECT ANSWER✅✅✅pure energy released from the nucleus whenever an
alpha or beta is emitted during radioactive decay
damage to tissue and DNA - CORRECT ANSWER✅✅✅gamma rays have no mass and can pass
completely through the body and can cause ______
3.8 days - CORRECT ANSWER✅✅✅the half life of radon
uranium decay series - CORRECT ANSWER✅✅✅uranium -> radium -> radon -> polonium -> lead
radon decay products (RDP) - CORRECT ANSWER✅✅✅source of cell damage in lungs through the
release of alpha and beta particles, short lived decay products are most significant (<30 min), static
charges, chemically reactive, solid particles, and heavy metals
plated out - CORRECT ANSWER✅✅✅charged RDPs attached to walls, floors, clothing, non-
measurable, non-breathable
