L12S10_Bonding_Lewisstru%2002-17-10

L12S10_Bonding_Lewisstru%2002-17-10 - Chem 1A L12:...

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Chem 1A L12: "Chemical Bonds, Lewis Structures" ©M.Kubinec,A.Pines, H.Nitsche 1 ©M.Kubinec,A.Pines,Nitsche L12-1 Lab 4: How the Nose Knows (this week) Goal: Develop a theory of how molecular shapes and functional groups affect our sense of smell. Tools and Skills: : Smell sample compounds, collect observations, draw Lewis dot structures, develop a model for smell. ©M.Kubinec,A.Pines,Nitsche L12-2 ©M.Kubinec,A.Pines,Nitsche L12-3 The Pauling Electronegativity Values
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Chem 1A L12: "Chemical Bonds, Lewis Structures" ©M.Kubinec,A.Pines, H.Nitsche 2 ©M.Kubinec,A.Pines,Nitsche L12-4 n Cl ~ 3.2 Na ~0.9 H ~ 2.2 Na + Cl - > 2.0 Ionic H δ + Cl δ - ~ 0.4-2.0 Partly Ionic Cl - Cl < 0.4 Covalent Z eff Electronegativity + - Electronegativity ©M.Kubinec,A.Pines,Nitsche L12-5 ChemQuiz © 12.1 For which X does H 2 + X 2 2HX release the most energy? A) Cl B) Br C) I H H H X H X X X ©M.Kubinec,A.Pines,Nitsche L12-7
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Chem 1A L12: "Chemical Bonds, Lewis Structures" ©M.Kubinec,A.Pines, H.Nitsche 3 Summary ©M.Kubinec,A.Pines,Nitsche L12-9
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L12S10_Bonding_Lewisstru%2002-17-10 - Chem 1A L12:...

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