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1 Chapter 5 Nuclear Chemistry Guided Notes5.1 Natural RadioactivityLearning GoalDescribe alpha, beta, positron, and gamma radiation.Isotopes and Radiation Elements with atomic numbers ______ and higher usually have one or more isotopes with unstable nuclei.An unstable nucleus is ___________________, emitting small particles of energy called __________________ to become more stable.Radiation may take the form ofo_________________________________o_________________________________o_________________________________o_________________________________Radioactive IsotopesAn isotope of an element that emits radiation is called a _________________________________. When radiation is emitted, a radioisotopeomay undergo a change in the number of _____________________omay be converted to an atom of another elementAtomic symbols for various isotopes are written with othe mass number in the upper left corner and the atomic number in the lower left corner of the element symbolothe mass number after the element _____________________ Example: __________________________________Vocabulary to Knowalpha particlebecquerel (Bq)beta particlechain reactioncurie (Ci)decay curveequivalent dosefissionfusiongamma rayChapter 5 Preview5.1 Natural Radioactivity5.2 Nuclear Equations5.3 Radiation Measurement5.4 Half-life of a Radioisotope5.5 Medical Applications5.6 Nuclear Fission and Fusion gray (Gy)half-lifepositronrad (radiation absorbed dose)radiationradioactive decayradioisotoperem (radiation equivalent in humans)sievert (Sv)53131I
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