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Polar, Non-Polar & Hydrogen Bonds
Packet #19
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Types of Chemical Bonds
Polar Bond Types of Chemical Bonds Saturday, December 29, 2018Saturday, December 29, 2018
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Remember…
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Bond Polarity & Chemical Bonds
Bond Polarity is due to differences in electro-negativity Bond polarity can predict the polarity of a bond ∆EN < 0.4 = non-polar covalent ∆EN between 0.4 and 2.0 = polar covalent ∆EN > 2.0 = ionic δ used to indicate partial charges Dipole movement is the measure of a molecule’s overall polarity μ = Q (charge) * r (distance) More details to come in Organic Chemistry
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Polar Bond A polar bond is formed because one atom, of the compound, being more electronegative grabs more electron density from another atom. The electronegative atom attempts to steal electrons. Saturday, December 29, 2018Saturday, December 29, 2018
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Types of Chemical Bonds
Non-Polar Bonds Types of Chemical Bonds Saturday, December 29, 2018Saturday, December 29, 2018
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Non-Polar Bond Joining of atoms with the same electronegativity
Saturday, December 29, 2018Saturday, December 29, 2018
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Types of Chemical Bonds
Hydrogen Bonds Types of Chemical Bonds Saturday, December 29, 2018Saturday, December 29, 2018
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Hydrogen Bonds A strong non-bonding interaction that causes a quick, weak “chemical bond.” Occurs when a hydrogen atom, attached to a highly electronegative atom, interacts with a lone electron from a nearby electronegative atom. These bonds are broken almost immediately Depends on temperature. Saturday, December 29, 2018Saturday, December 29, 2018
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Hydrogen Bond Although hydrogen bonds are weak, the vast number of them in large molecules makes them collectively significant The formation of water in various forms. 12/29/2018 6:21:19 AM
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Phases of Matter Liquid Solid Gas
Elements and molecules can exist in all three phases Saturday, December 29, 2018Saturday, December 29, 2018
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Phases of Matter II Saturday, December 29, 2018Saturday, December 29, 2018
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Van der Waals Forces
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Review
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