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Radiation & HalfLife

cava chem 303 s2d79 8.02 Radiation and Half-Life

QuestionAnswer
Radioactivity is the decay of an unstable atomic nucleus, followed by the release of [...]. Radioactivity is the decay of an unstable atomic nucleus, followed by the release of radiation.
Quarks attract one another via the [...] nuclear force. Quarks attract one another via the strong nuclear force.
Neutrons help [-ize] the nucleus. Neutrons help stabilize the nucleus.
Unstable nuclei [...] to become stable. Unstable nuclei decay to become stable.
alpha emission – emits a [...] nucleus (2 protons, 2 neutrons aka: alpha particle), often released from a large atom alpha emission – emits a helium nucleus (2 protons, 2 neutrons aka: alpha particle), often released from a large atom
beta emission – emits a high-speed [...] or [...] ([...]) from the nucleus (not from the orbitals) beta emission – emits a high-speed electron or positron (antielectron) from the nucleus (not from the orbitals)
gamma emission - emits an [...] [...] gamma emission - emits an electromagnetic wave
[...] particles can be stopped by paper or skin alpha particles can be stopped by paper or skin
[...] particles can be stopped by aluminum foil or Plexiglas beta particles can be stopped by aluminum foil or Plexiglas
[...] emissions can be stopped by concrete or lead gamma emissions can be stopped by concrete or lead
The half-life (t1/2) of a radioisotope is the amount of time required for [...] of the radioactive nuclei of the parent substance to decay into the daughter substance(s). The half-life (t1/2) of a radioisotope is the amount of time required for one-half of the radioactive nuclei of the parent substance to decay into the daughter substance(s).
Half Life: fraction remaining (FR) = [...] (n = number of half-lives) Half Life: fraction remaining (FR) = 0.5^n (n = number of half-lives)
Created by: mr.shapard