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LSH PS Nclr Rxns 1

Nuclear Reactions 1

Alpha decay/radiation An alpha particle ejected from an unstable nucleus drops its mass by 4 and its atomic number by 2
Beta decay/radiation A beta particle ejected from a nucleus turns a neutron into a proton, increasing its atomic number by 1
Alpha particle 2 protons and 2 neutrons
Beta particle A high energy electron ejected from a nucleus
Gamma radiation High energy waves of electromagnetic radiation
Radioactive isotope A version of an atom that is not stable and will decay
Half life The time it takes for one half of a sample to decay into something else
Decay chain A series of decays until a stable isotope is produced
Parent An unstable nucleus that decays into something else
Daughter The product element from the decay of a radioactive nucleus
Atomic number The number of protons in an element's nucleus that determines its identity
Isotope A version of an atom with a different mass (same number of protons but different number of neutrons)