Lecture 3 Basic Chemistry

Lecture 3 Basic Chemistry - Polarity of Water a Consequence...

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Lecture 3 Different types of bonds Non-covalent; covalent Electronegativity of atoms Polar Bonds Hydrogen bonds Hydrophilic and hydrophobic compounds Acids and bases Carbohydrates 0
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Set your PRS device Hit go, it should flask red/green Type in 79 (that is the channel number for this room. If you have other classes in this room, you don’t need to change. If you have classes in another room, you will need to set each time) After typing in 79, hit go again. You should get a solid green display. If you haven’t registered your PRS on Blackboard, do so before Monday
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Key Points Consequences of polarity in covalent bonding include hydrogen bonding, solvent properties of water All biologically relevant polymers form through condensation reactions (removal of water), so these molecules can be broken down by hydrolysis (addition of water) 0
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Figure 2-2 0
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Figure 2-6 van der Waals Attractions are Weak, Non-covalent Interactions 0
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Covalent Bonds – Degree of Polarity Based on Electronegativity Differences
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Unformatted text preview: Polarity of Water a Consequence of Different Electronegativities Figure 2-7 Water H Bonds to Itself Figure 2-2 Polarity of Water Key to Solvent Properties Important Functional Groups of Biological Molecules Figure 2-8 (Hydrophilic) Functional Groups H-Bond to Water Figure 2-5 Hydrophobic Groups Exclude Water Figure 2-4 Functional Groups H-Bond to Each Other Carbonyl Amide Carbonyl Hydroxyl Amide Imine Figure 2.3 Acids and Bases What is an acid? What is a base? What is meant by a conjugate acid or base? How does one define the strength of an acid or base? What is pH? What is a buffer? Condensation: Remove water Figure 2-10 Macromolecules Figure 2-13 (1-4) Glucose Fructose Glucose Galactose (1-4) Figure 2-16 Figure 2-17a 1 = 1,6 2 = 1,4 Figure 2-17b Figure 2-17c Chitin Is Polymer of N-acetylglucosamine Next time: Lipids and Proteins...
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Lecture 3 Basic Chemistry - Polarity of Water a Consequence...

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