 Today, we're going to make some slime. You've probably made slime before, but ours is a little special. We're going to use polyvinyl alcohol, and I'm going to measure 50 milliliters. And then we're going to use 10 milliliters of sodium borate with fluorescein and bromofenol blue. And these are just dyes. So we need 10 milliliters of that, a little too much, okay, 10 milliliters. And we're going to use a ziplock bag as our beaker. We're going to pour it in to our ziplock bag and mix. Once it's nice and mixed, we can take it out. And I want you to tell me what color you see. What color is that? Are you sure it's green? Let's see. Let's hold it up to light and see what happens. It looks red to me. So your task is to explain to me why when I hold it up to the light, it looks red. But when I have it laying on a solid surface, it looks green.