151F09_W11_LV_3

151F09_W11_LV_3 - Determine whether the following molecules...

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UA GenChem Determine whether the following molecules are polar or not polar NH NH 3 CH CH 2 F F 2 SeF SeF 2 XeH XeH 2 F F 2 SiH SiH 4 SF SF 4 XeF XeF 4 Yes Yes No Yes No Yes It depends…
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UA GenChem Summary Activity: Draw the THREE different Lewis structures for C 2 H 2 F 2 . For each structure, identify: the molecular geometry around each carbon the bond angles around each carbon whether the molecule would be polar or nonpolar
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UA GenChem Summary Activity: C C H H F F Trigonal planar / 120° polar C C H F H F Trigonal planar / 120° polar C C F H H F Trigonal planar / 120° nonpolar cis- isomer trans- isomer
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UA GenChem General Chemistry General Chemistry CHEM 151 CHEM 151 Week 11
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UA GenChem Forces and Particles INTRA MOLECULAR Forces within the molecule. Holds atoms together Determines the electron and molecular geometries. N≡N has strong intramolecular forces INTER MOLECULAR Forces between separate molecules. The forces between many particles determine the macroscopic properties.
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UA GenChem Intermolecular Forces Molecules in a substance interact with each other via intermolecular forces. The strength of these forces depends on the nature of the atoms in the molecule and on the molecular geometry .
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UA GenChem Intermolecular forces determine properties of molecular compounds such as: boiling point, melting point, density Intermolecular Forces
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UA GenChem Intermolecular Forces Stronger intermolecula r forces: *higher melting point *higher boiling point *more energy required to separate the molecules T ( o C) -100 -50 0 50 Gas Gas Liquid Liquid Solid Solid Stronger Intermolecular Forces
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UA GenChem Dipole-Dipole Forces The intermolecular forces between molecules with permanent dipole moments (polar) are called dipole-dipole forces.
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UA GenChem Dipole-Dipole Forces In polar molecules: The larger the permanent dipole, the stronger the intermolecular forces What could you predict about the boiling point of these substances?
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UA GenChem Dipole-Dipole Forces
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UA GenChem
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151F09_W11_LV_3 - Determine whether the following molecules...

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