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  • Water
    • Major component of cells
    • Water is a dipolar molecule
      • made up of 2 hydrogen atoms & 1 oxygen atom
      • water has no overall charge
        • oxygen has slight negative charge
        • hydrogen has slight positive charge
      • water has both negative & positive poles
    • Water & Hydrogen bonding
      • positive pole of 1 water molecule attracted to negative pole of another
        • attractive force is a hydrogen bond
      • hydrogen bond is relatively weak
        • about 1/10th of covalent bond
      • huge numbers of hydrogen bonds in water
        • significant response & are responsible for many of unusual properties


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