Ch3_Water

Ch3_Water - Water. Ch. 3. Two major concepts: Physical...

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Unformatted text preview: Water. Ch. 3. Two major concepts: Physical properties: Polarity, H bonds Surface tension (cohesion) Thermodynamics heat of vaporization specific heat: calorie Ice floats Solvent; concentration Modulate atmospheric conditions Thermodynamics Energy Potential energy (concentration, structure) Kinetic energy Heat Temperature Calories: little cal, big cal (cal, kcal, Cal) Specific heat Relation to reactions Many properties of water depend upon hydrogen bonds The slightly negative regions of one molecule are attracted to the slightly positive regions of nearby molecules, forming a hydrogen bond. Each water molecule can form hydrogen bonds with up to four neighbors. 1.0 When water reaches 0 o C, water becomes locked into a crystalline lattice with each molecule bonded to to the maximum of four partners. Ice is about 10% less dense than water at 4 o C. 1.0 The tensile strength of water is due to: 0% 0% 0% 0% 1. Salt bridges 2. Covalent bonds 3. Hydrogen bonds 4. High molecular weight 10 1. 0 of 350 A n s w e r N o w...
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This note was uploaded on 02/09/2009 for the course BISC 220LG taught by Professor Mcclure during the Spring '07 term at USC.

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Ch3_Water - Water. Ch. 3. Two major concepts: Physical...

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