Question

In an experiment, a group of students placed ten raisins in a container with 100 ml of water. They covered the container and let the raisins sit overnight. The students removed the raisins from the container and observed that they were larger. They also observed that the volume of the water had decreased. What happened to the raisins to cause them to become larger?

Answer 1

When raisins are placed in water and sit overnight, endosmosis takes place. Water goes into the raisins from the surrounding. Due to this endismosis, the raisins gain water and become larger in volume.

Since raisins absorbed some water, the volume of water from the container decreases.