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8 Cards in this Set
- Front
- Back
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cohesion
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water molecules rapidly and repeatedly bond/breaking w/ one another
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adhesion
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water sticking to other substances
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surface tension
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difficulty of stretching/ breaking surface water molecules.
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moderation of temperture
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effective heat bank
* heat: total amount of kinetic E in a body of matter * temp. avg kinetic E of body of matter: A. 0 degrees C water freezes B. 100 degrees C water boils C. 37 degrees C human body temp. |
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water's high specific heat
(moderation of temp.) cont. |
amnt of heat required to raise -1g of substance 1 degree C.
a. 1 cal: water b. 0.6 cal: ethanol c. 0.1 cal: iron * is how it can bond to H * aquatic organism's temp. range less that terrestrial organisms * coastal temp. range vs. continental * individual thermoregulaion |
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evaporative cooling
(moderation of temp.) cont. |
* high heat of vaporization
* panting or sweating * hydrologic cycle moderating climate |
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insulation of bodies waterby floating ice
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* water is less dense in solid vs. liquid
-begins expanding below 4 degrees C - molecules become locked together - aquatic communities are protected |
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the solvent of life
*solvent+ solute = solution |
* Water is versital but not universal
- can form hydration shells around ionic substances - ionic and polar regions of nonionic compounds enable water solubility * hydrophillic and hydrophobic substances * solute concentration in aqueous solutions * Mole of a substance: - a # (g) that is = to the molecular weight of the substances (dal) - a dozen: a 12 count of an object 23 - 6.02 x 10 molecules * molarity: # of moles of solute/ liter of solution |
