Diffusion and Osmosis

I really have no idea why I got 64 page views. I mean who would read this perhaps THE most boring blog in the world except maybe my mom... and certainly Mr. Quick but I doubt if he has figured out my link yet...

Anyways, in the class before last class (interesting phrase...) we studied about diffusion and Osmosis.

Diffusion:

Say if you drop food coloring into water, it would diffuse because of the constant molecular movement.

Osmosis:

Water molecules would get through cell membrane and move to the other side if the other side has a higher molarity of the solute or lower molarity of water. 

To prove the concepts, we did an osmosis lab.

In the first part, we put "cells" that contain different molarities of solution into water, and measure their changes of mass. The more the mass increased, the more water went into the cell, and the bigger the molarity was.

In the second part of the lab, my group put equal amount of yam into solutions with different molarities and measured the change of mass of yam. If the mass increased, it means the molarity of the yam was bigger than the molarity of the solution. If the mass decreased, it means the molarity of the yam was smaller than the molarity of the solution.