Biochemistry - Water Flashcards
What are the Intramolecular forces in the water?
polar covalent bonding
What causes the Intramolecular forces in the water?
unequal sharing of electrons
What are the Intermolecular forces in the water?
Hydrogen bonding
What causes the Intermolecular forces in the water?
the Dipole(water is polar)
What are the five unique properties of water?
- Universal Solvent
- High heat Capacity/ Heat of Vaporization
- Cohesive/Adhesive
- High Surface Tension
- Low Density in Solid-state “Ice”
What makes water the Universal Solvent? Why is this important?
- It will dissolve other polar molecules and ionic compounds (because of its polarity)
- transports in our bodies
- facilitates reactions
What makes water have a high heat capacity and vaporization point? Why is this important?
- takes a high amount of energy to change states because of H-bonds
- moderates our temp (sweating)
- buffer internal temp changes
- moderates climate
What makes water cohesive and adhesive? Why is this important?
Cohesive:
- water molecules stick together because of H-bonds
Adhesive:
- will bond to other surfaces because of polarity
- transportation system
- lubricants
What makes water have a high surface tension? Why is this important?
- Because of H-bonds
- surface habitat for organisms
What makes water have a low density in solid-state “ice”? Why is this important?
- H-bonds causes molecules to arrange in crystalline structures (more air in structures so it floats)
- aquatic habitats are isolated when the top freezes over
- prevents sudden temp changes
