11-6-08

In class today, I was excited to be able to create our own instructions for the activity. My group was a little unsure of what to do at first, but as we began to experiment, we started to comprehend our task even better. In our first cup, we put a piece of potato along with fresh water that had no salt added. In our second cup, we put a piece of potato along with water that had been mixed with 1 tablespoon of salt. In both cups, there was not much change. The pieces of potato still sat at the bottom of the cup. However, when we got to our third piece of potato in our third cup, we decided to add 4 tablespoons of salt with our water. This time we noticed a big change! We noticed that our potato was floating in the water. There was so much salt, that it created a kind of bouyancy for our potato. It was very interesting to see the differences that the salt made in the water.