CLASS 12

CLASS 12 - not have a listed electronegativity value? 1)...

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CLASS 12: The Unusual Nature of Water Reading: Chapter 9 1- We began the class by looking at a photograph showing ice, water, and water vapor. What is this unusual? 1) molecules go from locked in place to moving around freely Doesn’t change structure (interaction changes) Polar and Nonpolar Covalent Bonds 1- What is the difference between a polar and a nonpolar covalent bond? Provide one example of each. 2- Explain why partial charges develop on atoms that participate in a polar covalent bond. 3- What is the definition of electronegativity (EN) ? Why does this term apply only to atoms that participate in a covalent chemical bond? Why does the element neon
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Unformatted text preview: not have a listed electronegativity value? 1) polar (h :F) dipole moment, electron pair& density are NOT shared equally; nonpoplar (H:H) no dipole, electron pair & density ARE shared equally 2) Electrons not shared equally electrons pulled tightly to itself w/higher EN (becomes slightly negative, while atom with lower EN has electron deficiency becomes slightly more positive) 3) property of an atom in a molecule that draws an electron pair to itself (Depends on charge of nucleus, # of electrons in orbits); since they react to form other molecules; it is a noble gas...
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This test prep was uploaded on 04/18/2008 for the course MAP 133 taught by Professor Jordan during the Fall '07 term at NYU.

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