posted by CrissyXD on .
In class, I did an experiment with water and iodine solution in a beaker and also starch in a dialysis tube tied and placed in the beaker.
There were discussion questions I couldn't answer surely... please check my answers.
1. a)Use your results to determine the direction of net water movement in this experiment.
-water is moving into the starch solution
b)Is there a way to confirm this?
-increased water level of starch solution
2. Where was the concentration of water molecules greatest at the beginning of the experiment, inside or outside the tubing?
-outside of the tubing.
3. Explain the results of your experiment in terms of osmosis?
-because there was less water concentration in starch, the more concentration of water outside the tube went through the semipermeable membrane, or osmosis through to the starch solution.