When the gummy bear was placed in distilled water, the water entered the gummy bear making it increase in size because the concentration inside the gummy bear was greater than the outside of the gummy bear. When the gummy bear was placed in tap water, the gummy bear expanded due to osmosis. The gummy bear is made of glucose, salt, etc and the water in the cup surrounding it moved into the bear because water moves from high concentration (cup of water) to low concentration (gummy bear). As a result the bear collected a significant amount of water causing it to become much larger in size. When the gummy bear was placed in salt water it shrunk because there was a high percentage of water in it, and not a lot of salt. The salt from the water