Nuclear Chemistry

Nuclear Chemistry - Medium penetrating power stopped by...

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Nuclear Chemistry Nuclear Reactions and Radioactive Decay 1.)  Nuclear Reactions • Change in an atom’s nucleus • Three ways the nucleus can change: –Gain or lose protons –Gain or lose neutrons –Gain or lose both 2.)  Radioactivity • Process of emitting radiation • Causes one atom to change  to another kind of atom – Some nuclei are unstable and  they become more stable when they  lose energy – They lose energy by  changing the nucleus 3.)  Alpha Particles • Contain two protons and two neutrons • Very low penetrating power – stopped by a piece of paper • Written as:  _ or He or 4_ 4.)  Beta Particles • High speed electrons
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Unformatted text preview: Medium penetrating power stopped by thin metal foil Released when a neutron decays into a proton and an electron Written as _ or e or 0_ 5.) Gamma Rays High speed radiation without mass or charge Strong penetrating power partially stopped by thick lead and/or thick concrete Causes tissue damage Represented by _ 6.) Nuclear Stability Why are some atoms stable and others are not? Protons are repelling each other Atoms with too many or too few neutrons compared to the number of protons are unstable...
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Nuclear Chemistry - Medium penetrating power stopped by...

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