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10.1 Chemistry
Vocabulary Words
Question | Answer |
---|---|
radioactivity | process in which an unstable atomic nucleus emits charged particles and energy |
radioisotope | any atom containing an unstable nucleus |
nuclear radiation | charged particles and energy that are emitted from the nuclei of radioisotopes |
alpha particle | a positively charged particle made up of two protons and two neutrons |
beta particle | an electron emitted by an unstable nucleus |
gamma ray | a penetrating ray of energy emitted by an unstable nucleus |
background radiation | nuclear radiation that occurs naturally in the environment |