Lecture 1_notes

Lecture 1_notes - electronegativity Hydrogen, H 1 1 1 1 2.1...

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Lecture 1. 3/30/09 Introductions: Greg Simonds, Phillip Conklin, Divya Denduluri, Wesley Sughrue, Rebecca Wright Website: https://smartsite.ucdavis.edu Waitlist: situation, what to do Course organization: Lectures, clickers (25 pt), Midterms (3x75), Final (150), Discussion (100). All exams are multiple choice. Help sessions times will be posted on website. Book: Sadava, 8th ed. May be needed for next BIS. Responsibilities: lecture and discussion material. Readings as they apply to lecture material. Study questions. Absences: You can skip one discussion and get average score for it. Missing one midterm exam = 1/2 average score. Next 0. Legal excuses described in web site. Clickers: Wed Lecture: whiteboard, ask questions, stay in until 50' ! Today: chemistry Atoms, valence shell, orbitals, octet rule H and O -> water name protons e in outer shell typical # bonds
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Unformatted text preview: electronegativity Hydrogen, H 1 1 1 1 2.1 Carbon, C 6 6 4 4 2.5 Nitrogen, N 7 7 5 3 3.0 Oxygen, O 8 8 6 2 3.5 Phosphorus, P 15 15 5 (shell hybrids) 5 2.1 Sulphur, S 16 16 6 2 2.6 Bond type kCal- 1 -Covalent 50 - 110 Ionic 3 - 7 H 3 - 7 Hydrophobic 1 - 2 Van der Waals 1 • Ions: NaCl -- Na low Eneg 0.9 -- Chloride high Eneg 3.1 -- Na (11e) loses e- from outer shell and is left with perfect shell -- Cl (17e) gains e to make complete shell. Salt is more stable then either element. • H2O > H+ + OH- both have complete shells • CH4 -- High energy e- can be transfered to a more electronegative atom yielding energy. • lipid: non polar substance, best interacting with other lipids, not with water = hydrophobic • water soluble: polar substance, best interacting with water not with lipids = hydrophilic- 2 -...
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This note was uploaded on 06/07/2009 for the course BIS BIS2A taught by Professor Lucacomai during the Spring '09 term at UC Davis.

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Lecture 1_notes - electronegativity Hydrogen, H 1 1 1 1 2.1...

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