Chapter 4 - Atomic Structure Notes on 4.1 - 4.3. Atoms.
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Transcript of Chapter 4 - Atomic Structure Notes on 4.1 - 4.3. Atoms.
![Page 1: Chapter 4 - Atomic Structure Notes on 4.1 - 4.3. Atoms.](https://reader033.fdocuments.us/reader033/viewer/2022061616/56649f1b5503460f94c31120/html5/thumbnails/1.jpg)
Chapter 4 - Chapter 4 - Atomic StructureAtomic Structure
Notes on 4.1 - 4.3Notes on 4.1 - 4.3
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AtomsAtoms
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History of the History of the AtomAtom
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The discovery of the The discovery of the electron…electron…
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J.J. Thomson’s ModelJ.J. Thomson’s Model
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Rutherford and the nucleusRutherford and the nucleus
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400 BC 1803 1904 1910 1913 1926
Niels Bohr
J J Thomson
Democratus
John Dalton
Schroedinger / Heisenberg
Ernest Rutherford
Atomic Theory
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Parts of an AtomParts of an Atom
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Parts of an Atom:
ParticleParticle chargecharge massmass locationlocation
ProtonProton
NeutronNeutron
ElectronElectron
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QuarksQuarks
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Atomic NumberAtomic Number
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Mass NumberMass Number
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Atomic Mass UnitsAtomic Mass Units
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Mass of an AtomMass of an Atom
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IsotopesIsotopes
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Isotopes of HydrogenIsotopes of HydrogenHydrogen has three isotopes:
•Hydrogen-1
•Hydrogen-2
•Hydrogen-3
Hydrogen-1Hydrogen-1 Hydrogen-2Hydrogen-2 Hydrogen-3Hydrogen-3
mass = 1mass = 1
1 proton1 proton 1 proton1 proton 1 proton1 proton
0 neutrons0 neutrons
Atomic # =1Atomic # =1 Atomic # =Atomic # = Atomic # =Atomic # =
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Bohr Model vs. Rutherford Bohr Model vs. Rutherford ModelModel
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What is an energy level?What is an energy level?
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Energy Levels and the AtomEnergy Levels and the Atom
Energy Level Diagram
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Important Energy Level RulesImportant Energy Level Rules
Potassium - 19 total electrons
1 level - 2 3rd level - 8
2nd level - 8 4th level - 1
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The Electron Cloud ModelThe Electron Cloud Model
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Atomic OrbitalsAtomic Orbitals
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Can we see atoms?Can we see atoms?
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STM Images of an AtomSTM Images of an Atom