Permeable membranes lab /iodine and vegetable oil

Introduction This experiment is based on the problem of whether the Ziploc keister give allow the tincture of iodin or stiffen to diffuse crosswise the ductile membrane. The hypothesis world sampleed is if the bag will allow the iodine to travel across the membrane and if it will react with the stiffen in the Ziploc bag. cognitive process 1.          burgeon forth 25 mL of iodine into beaker 2.          overeat about 1/3 of the judge tube with stiffen solution and place in beaker (DONT POUR OUT!!!!) 3.         Pour 25 mL of starch solution into snack sizing Ziploc bag 4.         Seal Ziploc bag, and place in beaker 5.         Wait 24 hours and then record results Results The results of this experiment atomic number 18 that the starch in the bag turned a problematic purple in color and there is less iodine in the beaker than previously noted. The control starch in the test tube did not change at all.
Conclusion The starch molecules in the bag were too large to diffuse by means of the plastic and therefore the iodine diffused into the bag and reacted with the starch ever-changing it to the color purple. The control stayed unaltered because iodine and starch do not diffuse through glass. Very nice introduction and conclusion. Procedure and Results, neatly and thoroughly explained. Nicely do biology lab. If you essential to get a full essay, request it on our website: OrderEssay.net

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