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AP Unit I: The Chemistry of Life

Chapters 2-6

Jedediah Smith

on 5 September 2011

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Transcript of AP Unit I: The Chemistry of Life

The Chemistry of Life Chapter 2:
The Chemical Context of Life Chapter 3:
Water and the Fitness of the Environment Chapter 4:
Carbon and the Molecular Diversity of Life Chapter 5:
The Structure and Function of Macromolecules Chapter 6:
An Introduction to Metabolism Chemical Bonds determined by the
behavior of electrons STRONG weak Ionic Covalent hydrogen Van der Waals interactions nonpolar polar polar
covalent nonpolar
covalent Properties of Water Water is attracted to other compounds
Water moderates changes in temperature
Ice floats on water
Water is the "universal solvent" cohesion
adhesion high specific heat
high heat of vaporization ionic compounds
covalent molecules { { { { Water is a Polar Molecule
H joined to O by a single covalent bond
O is more "electronegative" than H, the electrons spend more time closer to O
H2O resembles the letter V, due to electornegativity and geometry
Oxygen's unbonded e- pairs are slightly -
Hydrogens are slightyl + Polarity and Hydrogen Bonding polar molecules are electrically attracted to other charged regions (polar and ionic)
attractions are called hydrogen bonds
Each H2O can form a maximum of four H-bonds Water's Unique Qualities are emergent properties that are the result of hydrogen bonding PROTEINS NUCLEIC ACIDS
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