 All right, so today we're setting up an experiment on diffusion. And this experiment is going to use cornstarch, which we place here in a solution. So it's got a little bit of water and a little bit of cornstarch. And then we've also taken that cornstarch and put it into this tube. And this is actually a special kind of tube called a dialysis tube. And it's special because it's like a membrane is permeable. So you have the starch in the tube. And then we have a beaker full of iodine. Now what's going to happen here, what's interesting, is that iodine is actually a indicator for starch. So I have some iodine here. And we're going to put it in the starch. And you can see what happens. It starts off orange. And then when it comes into contact with starch, it turns purple or black. So here's what the experiment is going to entail. We're going to take the starch, which is inside the tube. And we're going to put it in a beaker of iodine. So now is where you're going to predict what is going to happen. Since this is an experiment on diffusion, you can probably guess that one of these substances is going to move. So we're going to put this in there. And then we will record what happens.