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OAT - Chem

Chapter 12 - Nuclear Phenomena

TermDefinition
binding E E required to break up a nucleus into its protons and neutrons; E holding nucleons in nucleus
mass defect difference in mass with protons and neutrons being larger in mass than the original nucleus
nucleons protons and neutrons
Z Atomic number; number of protons
A Mass Number; number of protons and neutrons
Isotope elements with different numbers of neutrons but same number of protons
E = mc2 Binding E equation
Fusion when small nuclei combine to form larger nucleus; combining 4 H to form He for E
Fission splitting larger nucleus into smaller nuclei; requires absorbing a neutron
this remains the same in nuclear rxns no matter what Total Mass number (A tot)
radioactive decay naturally occurring spontaneous decay of certain nuclei by the emission of specific particles
Alpha Decay emission of an alpha particle, 2 protons and 2 neutrons, so Z-2 and A-4
alpha particle He-4
Beta - Decay emission of a beta particle aka an e-; neutron to a proton so Z+1
Beta + Decay proton to neutron so Z-1
Electron Capture Z-1; proton to neutron
half-life time it takes for half of the sample to decay
Created by: JaeBae4444
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