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Diffusion |
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Molecules (solutes) move through solutions from areas of high concentration to areas of low concentration. Heat and pressure also affect diffusion (but usually are the same)
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Density's effect on Diffusion?
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Dense slows diffusion (agar vs. water)
More molecules to get through
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Pheynolphthalein |
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Reacts with Base PH turning PINK
Cannot pass through membrane because it is POLAR
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Iodine |
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Reacts with Starch
Passes through membrane because it is Non-Polar
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NaOH |
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Turns Phenyolphthalein pink
Passes through membrane because it is Non-Polar
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Starch |
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Reacts with Iodine
Doesn't pass through membrane because it is Polar
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Water Potential
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Combined effects of concentration and pressure that affect the flow of water. Water will flow from high water potential to low water potential. Both high water concentration and high pressure increase water potential.
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Hypertonic Solution
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High molecule concentration of solutes. Water flows TO this.
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Hypotonic Solution
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Low molecular concentration of solutes. Water flows AWAY from this.
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Plasmolysis |
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Shrinking cytoplasm of a plant cell due to diffusion of water out of a cell and into a hypertonic solution.
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Isotonic Solution
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Evenly distributed molecule concentration of solutes. Water has even flow in/out.
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