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NuclearDecaySE

Explore nuclear decay concepts through particle types, atomic structure, and isotope changes. Learn key terms and apply prior knowledge to answer questions on atomic number and mass.

Alice Edwards
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ExplorJ eamingName:Lore Urigrxfo Ecpa _________________________Dale:6th o* May. 2024Student Exploration: Nuclear DecayVocabulary:alpha particle, atomic number, beta particle, daughter prouuct. gamma ray,isotope, mass number, nuclear decay, positron, radioactive, subatomic particlePrior Knowledge Questions {Do these BEFORE using the Gizmo.)The chartbelowgives the locations, charges, and approximate masses of threesubatomicparticles. The approximate mass of each particle is given in universal mass units (u).ParticleLocationChargeApproximate massProtonNucleus1*l uNeutronNucleus01 uElectronOrbitals1-0 u1.The mass number of an atom is equal to the sum of protors ard neutrons in the nucleus.A helium atom has 2 protons ana 2 neutrons. What is the mass number of this a t o m ? 42.The atomicnumberof an element is equal to the number of protons in each atom of theelement. All helium atoms have 2 protons. What is the atomic number of helium?2Gizmo Warm-upWhile most atoms are stable, some areradioactivewhichmears that they have a tendency to undergo spontaneousnuclear decay.The decay of raoioactive atoms generallyresults in theemissionof particles and/or energy.Several types of nuclear decay car be explored with theWuc/ear Decay Gizmo™. On the Gizmo, check thatAlphadecay and Uranium are selected.K s j r**1JBKirotiJJ 4MWHH1.Click Play(- »and then click Pause/>) when thealphaparticle is clearly visible.What is an alpha particle made of?? -irrnnsrrrr-s___________________2.Click Play ard observe. Besides the alpha particle, what else is emitted from the nucleusduring alpha decay?Ganrm lays.________________________________Gammaraysare energetic electromagnetic waves; they are often emittedinnuclear decay.

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Chemistry

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