Chapter 3 Flashcards
Emergent properties of water
- Cohesive behavior (stick to self)
- ability to moderate temp
- expansion upon freezing
- universal solvent
- Adhesion w/ other substances
The __________ of water minimizes temp fluctuations to within limits that permit life
…high specific heat…
Heat is absorbed when H-bonds…
…break (think boiling water)
Heat is released when H-bonds…
…form (think ice)
Water molecules with the greatest KE leave as ___, making the remaining liquid water cooler
…gas…
In ice, water molecules are locked into a…
…crystal lattice
Water is a versatile solvent bc of…
…its polarity
When an ionic compound is dissolved in water, each ion is surrounded by a sphere of water molecules called a…
…hydration shell
Solvent?
The thing used to dissolve things
Solute?
The thing being dissolved
Nonpolar bonds are…
…hydrophobic
Hydrophobic molecules related to oils are the…
…major ingredients of cell membranes
Acid?
substance that increases H+ concentration (H donor)
Base?
substance that reduces H+ concentration (more OH/H receiver)
pH = -log (H+)
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