Diffusion

Today we did an experiment to observe how particles spread in water. 

We used a two halves of a petrie dish and poured water into each one (cold water into the lid, hot water in the bottom half). We then sat the two halves on a white sheet of paper to make it easier to see how it changes. Using forces, we put a small amount of potassium permanganate in each half.

Here are some before during and after shots of the experiment:

           

           

As you can see, the potassium permanaganate molecules spread much faster in the hot water then they do in the cold water.