In the class, we continued the experiment
on part 1 and started a new one. In part 1, the glucose and starch diffused
into water. Therefore, the solution turned blue when a drop of iodine was
added. The Benedict’s was used to test the presence of sugar in the solution.
When the solution was heated and the Benedict’s was added, the solution’s color
changed from blue to orange, confirming that there is sugar in the solution.
In the new lab, we had three cells. We
measured the surface areas and put them each in a beaker and added KI solution.
After a few minutes, the cell changed color and we cut them in halves. The
biggest cell has less color spreading in the inside due to its size. Therefore,
the smaller the cell, the faster diffusion takes place.
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