Potato Lab

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The overarch purpose of this lab was to see if the amount of salt concentration impacted whether a potato stick grew, shrunk, or stayed the same in size/mass. Our hypothesis was, if potato slices are added to 0%, 1%, and 2% salt solutions, then the solution is hypotonic and will have a positive net gain. And, if the potato is add to the 3% solution, then the solution will be isotonic and the weight will stay the same. However, after testing the data and gathering helpful information, the hypothesis does not support the results of the lab. The potato in the 0% solution originally weighed (potato 1) 2.2 grams and (Potato 2) 1.9 grams. After weighing the potato after they sat in the solution overnight, the potato then weighed (Potato 1) 2.8 grams and (Potato 2) 2.4 …show more content…

In this case, the potato became more squishy and visibly smaller in size than it originally started as. Finally, the potatoes that were placed in the 3% solution (potato 1) started as 2.1 grams and ended as 1.6 grams. Potato two started as 2.4 grams and ended as 1.8 grams. The net loss for this solution ended up being -0.55 grams. The potatoes after soaking in the 3% salt solution were very squishy and significantly smaller in size. Since the potato shriveled up and got smaller, then it is hypertonic. This is because there is more salt, which sucks, to make the flow of the water go inside the potato to outside the potato. The result of the control group, which is the 0% salt solution and 100% water solution, compared to the 2% and 3% solution, helps to show how the movement of water works. Since water moves from high to low concentrations until it reaches equilibrium, it was easy to see how the amount of salt present in a solution impacted the mass of the potato

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