Question: Select the keyword or phrase that will best complete each sentence. _ _ _ _ _ are high - energy radiation released from a radioactive

Select the keyword or phrase that will best complete each sentence.
_____ are high-energy radiation released from a radioactive nucleus.
_____ are radioactive particles that have a negligible mass and a +1 charge.
The _____ is the amount of a radioactive element required to sustain a chain reaction.
Nuclear _____ is the joining together of two nuclei to form a larger nucleus.
_____ is the process by which an unstable radioactive nucleus emits radiation, forming a nucleus of new composition.
The _____ is the time it takes for one-half of a sample to decay.
fission
radioactivity
gamma rays
beta particles
critical mass
limiting reactant
radioactive decay
positrons
fusion
half-life
alpha particles

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