| A | B |
|---|
| Too many or too few neutrons | unstable |
| alpha particles | positively charged |
| nuclei of helium | alpha particle |
| same element, different number of neutrons | isotope |
| radioactive decay of uranium-238 in crust releases | radon gas |
| nuclei combine | fusion |
| the most penetrsting form of nuclear radiation | neutron emission |
| causes atomic number to go up 1 | beta emission |
| fusion | light nuclei + high temp (millions of degrees) |
| particle accelerators create | synthetic elements |
| short-lived isotopes in agriculture | radioactive tracers |
| The sun, water, plants, air and you! | background radiation |
| metal tube with thin wire | Geiger counter |
| metal rod with 2 thin metal leaves | electroscope |
| unstable nuclei | radioactive materials |
| gain a proton, lose a neutron | beta decay |
| nuclear change (by radioactive decay) | nuclear decay |
| NOT nuclear radiation | X rays |
| fission | creating lighter neuclei from one heavier nuclei |
| nuclear radiation | particles or energy from the nucleus |
| slows down a fission chain reaction | absorb neutrons somewhere else |
| bubble chamber | liquid boils |
| cloud chamber | vapor condenses |
| ionized particpes in air | smoke alarms |
| force that binds protons and neutrons in the nucleus | strong force |
| ionization | to gain or lose electrons |
