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chapter 16 sci.
chapter 16 flashcards
Question | Answer |
---|---|
what is radioactivity | the giving off of particles or rays from the nuclei of some atoms |
alpha decay | giving off an alpha particle |
alpha particle | molecule made up from two protons and two neutrons |
beta decay | giving off a beta particle |
beta particle | an electron |
gamma decay | during an alpha decay or a beta decay energy is given off |
gamma ray | the energy that is given off in the form of light and have no mass or charge and creates no new element |
half-life | the time it takes half of the nuclei to decay |
nuclear fission | the process where one nuclei breaks down into two and releases energy |
nuclear chain reaction | a continuous series of nuclear fission reactions |