3 - Polarity

3 - Polarity - Polarity Bonds and Molecules What holds...

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Click to edit Master subtitle style Polarity Bonds and Molecules
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What holds molecules together? Bonds Bonds are made up of? Electrons How do the electrons hold atoms together?
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Two ways: p Ionic Bonds – attraction between ions of  opposite charges Na+ Cl- p Covalent Bonds – sharing of electrons between  adjacent atoms
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Are they really different? Let’s share a pie! Mine Yours Yours Mine
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Sharing doesn’t have to be equal! Mine
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Ionic and covalent are part of a  continuum Ionic Covalent
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Two extremes Mine Yours Ours
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Something in the middle Mine Yours Yours Mine
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Ionic and covalent are part of a  continuum Ionic Uneven sharing Equal sharing  Non-polar Polar
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So, consider a bond, any bond: Cl – Cl Which case is this? Equal sharing!
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H-Cl Which case is this? Unequal sharing!  How do you know? They are on opposite sides of the Periodic table!
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This note was uploaded on 04/17/2008 for the course CHEM 1011.216.0 taught by Professor Joelanzafame during the Winter '07 term at RIT.

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3 - Polarity - Polarity Bonds and Molecules What holds...

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