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Element Builder Gizmo Exploring Atoms and Electron

A hands-on exploration using the Element Builder Gizmo to understand atomic structure, subatomic particles, electron arrangement, and periodic table organization through interactive learning, diagrams, and critical thinking activities.

Mason Bennett
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Student Exploration: Element BuilderVocabulary: atomatomic number, electron, electron dot diagram, element, energy level, ionisotope, mass number, neutron, nucleus, periodic table, proton, radioactive, valence eleclronsGizmoWarm-upAtoms are tiny particles of matter that are made up ofthree particles:protons, neutronsandelectrons . TheElement BuilderGizmo™ shows an atom wilh a singleproton. The protonislocatedinthe cenler oftheatomcalled thenucleus.1.Use the arrow buttons ( *j to add proIons,neutrons, and electrons to the alom. PressPlay (- )A.Which particles are located inthe nucleus?3B.Which particles orbit aroundlhenucleus?stamptaomd'N‘T-rt■*’<• Wl * VnW-r-ProipiiiNtulWfB+owxn;M ”.|onone2.Turn onShowelementname.Whal causes the element name Io change?When you add protonsActivity A:SubatomicparticlesGet the Gizmo ready:•Use the arrows to createanatom with two proIons,two neutrons, and two electrons.•Turnon Show element name.'a.Question: What are the properties of protons, neutrons, and electrons?1.Observe:TurnonShowelementsymbolandElementnotation.Three numbers surround the element symbol: themass number(A ), electrical charge(nonumber is displayed iflhe atomisneutral}, and the atomic number(Z).2.Investigate: Watch how the numbers change as you add or'Heremove particles.A.Which number is equal Io the numberofprotonsinthe atom? atomic numberB.How can you calculate lhe number of neutrons (W) in an atom? How can you calculate the numbe

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cf neutrons {Art n an atom?C.Which partide (proton . neutron, or electron) has-a positive charge? crotonsNegative chaige? electronscari9E31all? neutrons3.Anayze: An isotope is an alternative farm of ar e errantEact isotope of an element hasthe same number of protons, but a different numbepof neutrons. The isotope is representedby the atomic symbol and mass number, such as He-4. Some isotopes are stable, whileotners are radioactive winich means the atoms decay over time and emit radiation.AYlhat are the stable isotopes of carton? Cartcn-12 Is stable, meaning tt never urda-ones radbaiiUv-decayB.Wiat a ethe stable isotopes of nitroger?There are iv/o stable lEotocee oTN: 14\and 15NC.List two radioactive sotopes of oxygen: oxygen-15 and oxygen-13.4.Practice: Use the Gizmo 1o answer tne fb lowing questions.AHow many electrons are in a neutral atom of lithium?3B.How many neutrons are im an atom of Mg-25?13C.Wiats the mass numbe- of an atom wth 5 protons and 7 neutrons?12D.Wien an atom is charged, it is cal ed an ion.Howmany electrons are in tf ? 10E.How many electrons are in Mg1*? IflActivity B:Gel die Gizmo ready:*OElectron■Create a neutral hydrogen atom i l-arrangementsproton, D neutrons 1 electron) ._____________Question: How a re electrons arranged around the nucleus of an atom?1.ubse"ve: Add electrons to the atom until you have used all the available electrons. W a tdoyou notice? They are all surrounding that one proton and they are rotat -g around it. I also notice that theatomic mass changed into2.Analyze: Electrons are arrangedinorbits called energy levels The Gizmo shows all of thefirst two energy levels but only part of the third energy level.AHowmany electrons can ft in the first energy level?.Only 2B.Howmany electrons can ft in the second energy level?Only7C.How many electrons fit in the pan of the third energy eve shown? Only E
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Subject
Chemistry

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