In Biology, we are doing an osmosis experiment using a gummy bear. The Gummy bear has a selectively permeable coating that allows water molecules to pass through while blocking larger molecules. Water molecules move into the bear in this osmosis experiment, enlarging it. Using two beakers filled with the same amount water, we placed three full spoons of sugar and salt on the other. We also had another beaker with the same amount of water with nothing on it. After we added solute in, we placed gummy bears on each three different beaker.
What is Osmosis? Osmosis is the movement of water molecules from a region high concentration to a region of low concentration. The water molecules move across a semi-permeable membrane.
Hypothesis:
Normal Water: I predict that the gummy bear will increase as it's hyper-tonic to water - gummy bear has a high concentration of sugar than water.
Salt Water: I predict that the gummy bear will decrease as it's hypo-tonic to water - salt water has a higher concentration of solute compared to the concentration of the gummy bear.
Sugar Water: I predict that the gummy bear will stay the same as both sugar particles are present between the solute and solvent(iso-tonic). However, I predict that it'll increase a bit since I think the sugar in the water has a higher concentration than the gummy bear.
Results
(red = normal water)
(yellow = sugar water)
(white = salt water)
As a result, my hypothesis were correct. The gummy bear in the normal water increased as it's hyper-tonic to water. In contrast, the gummy bear in the salt water decreased as it's hypo-tonic to the (salt) water. Interestingly, the gummy bear in the sugar water increased a bit as it's hypo-tonic to the (sugar) water.
gummy gummy!!
