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CHEM 1515 Exam 1 Review powerpoint

CHEM 1515 Exam 1 Review powerpoint - Dr Bert Silverman BC I...

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1 Dr. Bert Silverman BC I Exam 1 Review EXAM 1 COVERS : ( APPROX # QUESTIONS; TOTAL = 40 MULTIPLE CHOICE) GENERAL OVERVIEW & WHAT YOU SHOULD KNOW (7) WATER & NON- COVALENT BONDS (7) ACID-BASE CHEMISTRY & TITRATIONS(6) AA (10) PEPTIDES & PROTEINS (10) QUESTIONS WILL BE RANDOMIZED Wednesday, July 7, 2010
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2 THIS REVIEW THIS IS ONLY AN OUTLINE NOT INCLUSIVE OF EVERYTHING EXAM QUESTIONS ARE BASED ON THE LECTURES REVIEW YOUR LECTURE NOTES ! Wednesday, July 7, 2010
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3 WHAT YOU SHOULD KNOW- REVIEW CARBON BONDS : WHAT CAN YOU SAY ABOUT: C-C C=C FUNCTIONAL GROUPS CARBONYL ALDEHYDE KETONE CARBOXYL HYDROXYL METHYL, ETHYL AMINO PHENYL Wednesday, July 7, 2010
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4 REVIEW - GENERAL INTRO HOMEOSTASIS ? BIOMOLECULES STEREOSPECIFIC ? CHIRAL ? INFORMATION FLOW ? MONOMERIC SUBUNITS ? Wednesday, July 7, 2010
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5 BIOMOLECULES MOST BIOMOLECULES ARE EITHER CHARGED OR POLAR HYDROPHILIC IONIC, POLAR HYDROPHOBIC NON-IONIC; NON-POLAR AMPHIPATHIC Wednesday, July 7, 2010
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6 NON-COVALENT INTERACTIONS WEAK (AQUEOUS SYSTEMS) HYDROGEN BONDS IONIC BONDS HYDROPHOBIC INTERACTIONS VAN DER WAALS VS COVALENT BONDS Wednesday, July 7, 2010
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7 WATER SOLVENT ? WEAK BONDS ? IONIZES OH- & H+ WEAK ACIDS & BASES IN AQUEOUS SOLUTION = BUFFERS pH Wednesday, July 7, 2010
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8 pH CALCULATIONS pH = -log [H + ] pH is a LOG SCALE Difference of 3 pH units = 10 (3”Logs”) NOT 3X; NOT 3 X 10 = 30X pOH = -log [OH - ] pH + pOH = 14 pH = 14 - pOH pOH = 14 - pH Wednesday, July 7, 2010
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