BIOL 112 Chapter 2: Ch. 2
jakbfousda and 39238 others unlocked
59
BIOL 112 Full Course Notes
Verified Note
59 documents
Document Summary
2. 2 the early oceans + properties of water. Water vital b/c as a solvent, can dissolve more types of substances than others. Substances most likely to collide + react when dissolved. O more en than h -> polar covalent -> since bent, molecule polar (if was linear, polarity don"t matter) 2 h20s -> partial (+) on h attracts partial (-) on o -> hydrogen bond. In aqueous (water-based) solution, h-bonds form btwn water + polar molecs + ions (hydrophilic) Hydrophobic-uncharged/nonpolar compounds that don"t interact w/ h20 thru h- bonds or dissolve. Interact w/ each other instead (weaker than h-bonds) H bonds not as strong as covalent/ionic bonds, but more common. H20 structure + ability to form h-bonds can explain: expands when liquid -> solid, high specific heat. Cohesion-binding btwn like molecules (h20 cohesive b/c of h-bonds btwn molecules) Adhesion-binding btwn unlike molecules, usually btwn liquid and solid surface (h20 adheres to any surface with polar or charged components)