Flashcards in Intermolecular Forces and Properties of Water Deck (23):
The percent of our body weight that is water
Total body water (in liters)
Amount of intracellular fluid water (in liters)
Amount of extracellular fluid water (in liters)
Breakdown of extracellular fluid water of plasma and blood (in liters)
Where is the majority of water in the body?
Inside the cell (intracellular fluid)
Why is water so important?
Influences almost every molecular activity in the body; excellent polar solvent
The bonds in a water molecule are what kind?
What is a covalent bond?
Sharing of electrons
Bond Strength - Covalent
In a polar covalent bond, what is formed?
What is the cause of ion formation?
extreme differences in electronegativity
What is an electrostatic interaction/ionic bond?
oppositely charged ions attract each other, NO sharing
What is the advantage that ionic bonds have over covalent bonds?
Partners are interchangeable
Bond strength - Ionic
What is a hydrogen bond?
A dipole-dipole interaction where the partial positive is always contributed by a hydrogen; NO sharing
Bond Strength - Hydrogen
What makes water such a good solvent?
permanent dipole and hydrogen bonding; polar and charged molecules readily interact with it
What is amphipathicity?
having both polar and non polar parts
Give an example of amphipathic molecules
Fatty acids, detergents
Bond Strength - London Dispersion/Van der Waals
Percent NaCl in intravenous saline