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Osmosis in Potatoes
4 thin slices of potato.
We tweaked the experiment because we wanted to be sure we could "see" the water moving into or out of the potato slices. We did two glasses of water with food coloring, and two glasses without. We added salt to one of each color group. (about a Tbs per 2 cups) We actually thought that maybe the potatoes would add their water to the salty water and that they would soak up the fresh water. What we discovered was the opposite.
After about an hour of soaking, we inspected the potatoes. The slices in the fresh water got more crisp (loaded with water), while the ones in the salt water became rubbery. They had given over their water to try and equalize the salinity of the water.
I hope you enjoyed this week of blog hops, and found lots of great ideas there. It was fun for us to discover the science all around us. No matter where you live, every detail of life shows it was created with an amazing design!
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