Diffusion and Osmosis Lab

In the beginning we put the substances iodine and water into a cup and placed a tube bag full of glucose and starch in it. The next day the iodine had entered the bag and the glucose exited. We knew this because in our last experiment (Polysaccharides) the mixture of iodine and starch caused a color change just like it did in the bag. Also we knew that the glucose went out of the bag into the tube because if it wouldn't have, the bag would have expanded or exploded.

Later, we did the same thing but with different substances and here is our results.

Antacid tablets were made into a liquid with a bit of water and poured in a tube at the weight of 13.43 grams. The very next class hour we checked them and they went up to 14.74 grams, the very next day they were at 14.23. The second cup had sodium acetate mixed with water with the weight of 13.74 grams. The next class hour it was already at 23.09 grams, the net day it was 16.23. Corn syrup was by itself in the tube and weighted 11.93, then class hour it was already at 15.88 grams, the very next day it was 8.47 grams. The last cup was filled with sodium bicarbonate at the weight of 11.66 grams, the next class hour it was 12.09 grams and the next day it was 11.46 grams.
After seeing these results i noticed that it must be faster for the water inside the cup to enter the tube than the substances to exit out into the cup. I know this because the tubes were already weighted heaver each time the class hour then the next day (when the substances exited out) it lowered its weight.