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Unformatted text preview: Explain isotopes, Small molecules eg. Water (show visual) serves as a solute for complex array of molecules in a living cell. Passes back and forth across membranes by osmosis. Molecules tend to stick together (Hydrogen Bonding). Amounts of Things: 1. What is the atomic weight of hydrogen, H 2 , HCl. 2. Define a mole 3. Concentration: A mole per liter! 4. Discuss pH--- 10-4 M H + = pH 4 IONIC AND COVALENT, POLAR COVALENT, HYDROGEN BONDS . 1. Ions and dissociation (one way things are acids) 2. Demonstrate a change in H+ concentration over time in a bacterial culture. 3. Effects of pH e.g. basic dyes won't stain at low pH. 4. Acids decrease pH by releasing H+ ions....
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- Fall '09