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Chapter 16 science study flashcards radioactivity

Radioactivity The process in which an unstable nucleus gives off nuclear radiation.
Alpha Decay Alpha particle released from nucleus, decreases atomic number by 2.
Beta Decay Loses electron, changes atomic number. No change in mass number.
Alpha Particle (Stopped by paper) Positive electric charge, 2 protons and 2 neutrons. (Helium Nucleus)
Beta Particle (Stopped by aluminum foil) High speed electron or positron lost in nuclear fission.
Gamma Ray (Thick piece of lead to stop)
Created by: sydleann