This is an experiment about mixing water, oil, and soap and observing how the agents interact.
For this experiment you will need a clear container with a lid, 1/4 cup of oil, a 1/2 cup water, and 1/4 cup of dish soap.
First step fill the container about half way with water.
Next add oil to the water.
Look very closely at the bottle. You will see something yellow at the top and water at the bottom. Put the lid on your container and shake it up. Let it sit for a few moments and the oil and water will separate.
The reason they do not mix to make a solution is because the molecules repel each other. Water likes water, and oil likes oil. Oil is lighter than water so it floats on top.
If you add soap and shake it up you see that it will mix together! This is called emulsion. The dish soap likes water and oil, so it helps mix it up and bring all the molecules together. That's why we need dish soap because it helps dishes get clean.
That's how you mix water, oil, and soap!
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