BIOL 150B Lecture Notes - Lecture 3: Evaporative Cooler, Cell Nucleus
19 Feb 2018
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Document Summary
Water can exist as a gas (water vapour) liquid, (liquid water) or solid (ice) The properties of water are due to its polarity (whether it has a negative or positive charge) Cohesion (when molecules of the same kind stick together) Adhesion (is when molecules of separate kinds, stick together) Water would evaporate slower than alcohol for example, because it takes much more to separate the molecules in water. Water has a stronger resistance to temperature change than other liquids. Heat must be absorbed to break hydrogen bonds. Evaporative cooling, is when a substance evaporates, the surface of the liquid that remains behind, cools down. Water is the solvent of life, that is in all cells. Solution = a liquid consisting of a uniform mixture of two or more substances. Intercellularly as humans we want to be at a ph of 7. We always want this to continue to be stable.
