BIOL 1F90 Lecture Notes - Lecture 5: Ultimate Tensile Strength, Boiling Point, Hydrogen Bond
21 Jan 2016
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Document Summary
Boiling point and freezing point is high due to the water molecules wanting to stick together. Heat of vaporization: heat requires to vaporize 1 mole of nay substance at its boiling point under standard pressure. Fusion: when a substance goes from the liquid to the solid state and energy is released. Heat of fusion: energy that is released during the process of fusion. Specific heat: heat required per unit of mass to raise the temperature of that mass by one degree celsius. High fusion will melt water, high specific heat raised temp, high heat of vaporization cools. Cohesion: hydrogen bonding b/w water molecules gives water a high tensile strength, molecules stick together. Pulls water to the tops of the highest trees. ^ having water come apart is difficult water holds onto itself, xylem elements (water tight tube that supplies water) Similar to our bodies sweating to cool down.
