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Nuclear Changes

Phy. Science Chapter 10

QuestionAnswer
Radioactive Decay The disintegration of an unstable atomic nucleus into one or more different nuclides
Nuclear Radiation The particles that are released from the nucleus during radioactive decay
Alpha Particle A positively charged particle that consists of two protons and two neutrons and that is emitted from a nucleus during radioactive decay
Beta Particle An electron or positron that is emitted from a nucleus during radioactive decay
Gamma Ray The high energy photon emitted by a nucleus during fission and radioactive decay
Half-life The time required for half of a sample of a radioactive isotope to break down by radioactive decay to form a daughter isotope
Fission The process by which a nucleus splits into two or more fragments and releases neutrons and energy
Nuclear Chain Reaction A continuous series of nuclear fission reactions
Critical Mass The minimum mass of a fissionable isotope that provides the number of neutrons needed to sustain a chain reaction
Fusion The process in which light nuclei combine at extremely high temperatures, forming heavier nuclei and releasing energy
Created by: Heyitssarahx94
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