Review Sheet-Chapter 2-Essential Chemistry for Biology-Water and ...

Review Sheet-Chapter 2-Essential Chemistry for Biology-Water and LifeList the 4 life-supporting properties of water.1)2)3)4)Define the following terms:Why do water molecules stick together?Give an example of cohesion.Why does water have unusually high surface tension?Give an example of surface tension.cohesionsurfacetension-Define the following terms:heatkineticenergytemperaturecaloriespecificheatevaporationheatof vaporization-Why does water have such a high specific heat?How does the high specific heat modify temperature?Why does ice float in liquid water?What is the biological significant of floating ice?Define the following terms:solutionsolventsolute-What properties of water make it a good solvent?

Define the following terms:hydrophilic-hydrophobic-Give an example of a hydrophilic substance.Give an example of a hydrophobic substance.Define the following terms:molemolarityaqueoussolutionacidbasepH-Give an example of an acid.Give an example of a base.In any solution at 25C, the product of H+ and OH-[H+] [OH-] =[H+]= ____[OH-]= ____If enough acid is added to a solution to increase the [H+]= 10 -4 M, then [OH-]= ___ M.The pH of the solution is defined as the negative logarithm (base 10) of the [H+].pH = -log [H+]For a neutral solution, [H+] is 10 -6 M.The pH of the solution is _________.For a neutral solution, [OH-] is 10 -9 M.The pH of the solution is _________.What is a buffer? How can small changes in pH be harmful in biological processes?