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Polar Bonds and Molecules Chapter 8.4
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Electronegativity Scale
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If the difference in electronegativity is between
: Non-Polar Covalent 0.4 – 1.0: moderately polar covalent : very polar covalent bond >2.0 Ionic Bond
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Identify the bonds between each atom pair as nonpolar covalent, moderately polar covalent, very polar covalent or ionic. H and Br K and Cl C and O Cl and F Li and O Br and Br
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Place the following covalent bonds in order from least to most polar:
H-Cl H-Br H-S H-C
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Polar Covalent Bond vs Non-Polar Covalent Bond
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Polar Covalent vs Non-Polar Covalent
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Drawing Bond Dipoles: BF3
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Drawing Bond Dipoles: CH3OH
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Net Dipole of Molecules
Dipole – separation of charges within a molecule between two covalently bonded atoms. Net Dipole – When all the dipole vectors are summed to give one overall dipole.
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Page 253 Q 31, 35
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