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TE Nuclear Chemistry

TermDefinition
band of stability a graph that shows which atoms have a stable nucleus as determined by the neutron to proton ratio
radioactive decay when an unstable nucleus changes
transmutation when one element becomes a different element due to nuclear decay
emission when something is thrown out of the nucleus
alpha particle 2 protons and 2 neutrons
beta particle a particle with a negative charge and negligible mass
positron particle a particle with a positive charge and negligible mass
gamma ray pure energy that leaves the nucleus
half-life the amount of time it takes for half of the unstable nuclei to decay
fission when an atom splits apart into smaller particles
fusion when nuclei fuse together to make a larger particle
E= mc2 the equation that shows the relationship between mass and energy
background radiation the amount of radioactivity that we are naturally exposed to because we live on planet Earth
stable atom an atom that has a nucleus with the perfect neutron to proton ratio
unstable atom an atom that does not have the proper neutron to proton ratio to be stable and will undergo radioactive decay
strong nuclear force a force of attraction between particles in the nucleus that are right next to each other
repulsion between like charges positively charged protons repel other positively charged protons which can make the nucleus unstable
radioisotope an isotope that has an unstable nucleus
Created by: kost
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