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Unformatted text preview: Figure 2.13 Valence electrons determine the number of covalent bonds an atom may form Electron transfer between two atoms Ions Anion Cation An ionic bond Figure 2.14 Ionic compounds salts Figure 2.15 Weak Chemical Bonds Several types of weak chemical bonds are important in living systems Hydrogen Bonds Figure 2.16 Van der Waals Interactions Weak chemical bonds play key roles Shape The precise shape of a molecule Determines function Is determined by valence orbitals s and p orbitals may hybridize Figure 2.17 Molecular shape specificity Figure 2.18 A Chemical reaction definition reactants products Photosynthesis 6CO2 + 6H2O C6H12O6 + 6O2 Chemical equilibrium is reached when the forward and reverse reaction rates are equal 3H2 + N2 2 NH3...
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This document was uploaded on 01/23/2012.
- Spring '09