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| pH value represent a _____ fold change in ion concentration |
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| high H+ (hydrogen ion) and acid |
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| high OH- (hydroxyl ion and basic |
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| what is the pH level of water |
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| why are water molecules polar |
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| one end is negatively charged due to the oxygen atom and the other end is postively charged due to the hydrogen atoms |
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| how many hydrogen bonds can a water molecule form with other water molecules |
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| have the ability to resist pH change by chemically incorporating excess H+ (hydrogen ions) or donating H+ when it is depleted. blood and milk contain natural buffer systems |
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| the amount of heat necessary to raise the temperature of one gram of that substance one degree centigrade. |
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| are substance with high specific heat harder or easier to heat up than those with low specific heat |
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| define heat of vaporzation |
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| amount of heat necessary to cause a liquid to evaporate. |
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| change from liquid to gas. |
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| is water an efficient evaporative cooler. If so, why? |
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| yes, it has a high heat of vaporatation so it can absorb a lot of heat before it evaporates |
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| the way that water is drawn above level through small diamter tubes by the forces of cohesion and adhesion |
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| the ability of water molecules to bond to each other (because they are polar) |
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| the ability of water molecules to bond to other polar substances. also the ability of wate molecules to hold othe molecules and ions in solution |
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| the almost membrane-like outer layer of water caused because water is unable to bond with more hydrogen above is surface so it shares its unused bonding capacity with the surface plane of the water. |
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| the ability of water to "wet" other polar substances. |
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| How many times more basic is a solution with a pH of 9 than a solution with a pH of 8? |
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| How many times more basic is a solution with a pH of 10 than a solution with a pH of 8 |
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| Which heats more rapidly ethyl alcohol or water |
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| Which cools more raidly ethyl alcohol or water |
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| which has a higher specific heat ethyl alcohol or water |
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| to regulate body temp would it be better to have a body fluid with a high or low specific heat? |
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| is a solution with a high pH acidic or basic? |
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| Which is more concentrated in a low pH solution H+ (hydrgen ion) or OH- (hydroxl ion) |
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| other factors being equal should a humid or dry night be cooler |
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| was the substance tht caused the most intense cooling sensation also the most efficient evaporative cooler |
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| would death by drying up be more likely for an organism composed of alcohol or for one composed of water? |
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| based on the behavior of water with wax, oil and most plastics, would you say tht these substances are polar or nonpolar? |
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| does water hold other ions (such as sodium or chloride) in solution by adhesion or cohesion |
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| Do your experimental results suggest that a tree could move water more effectively from its roots to its leaves using smaller or larger diameter vessels |
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| mosquitoes can walk on water because of adhesion or cohesion |
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