Campbell_03 - Chapter 03 Water and the Fitness of the...

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Chapter 03 Water and the Fitness of the Environment
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Properties of Water Water is a polar molecule The curious properties of water arise from water’s polar nature
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Effects of Waters Polarity Water molecules are attracted to one another by hydrogen bonds Water sticks to Water
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Waters Cohesive Behavior Hydrogen bonds in liquid water break and reform with great frequency Cohesion Organisms depend on this property Surface tension – measure of how much energy it takes to stretch and break the surface of a liquid
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Water and Earth’s Temperature Water absorbs heat from warm air and releases heat to cooler air making stable To understand this we must understand heat and temperature
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Water Regulates Temperatures of Earth Heat – measure of total kinetic energy due to molecular motion in a body of matter Temperature – intensity of heat due to average kinetic energy of the molecules How ice cubes work Calorie – amount of heat energy required to raise temperature of 1 g of water by 1 deg. Celsius Whats this go to do with water?
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This note was uploaded on 01/27/2011 for the course BIO 301 taught by Professor Razi during the Spring '08 term at George Mason.

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Campbell_03 - Chapter 03 Water and the Fitness of the...

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