Ta-Do: Hands… On Science Season 1, Episode 13 – UFO Blob Learn about density! Send us your comments and suggestions for experiments! https://midnightscienceclub.com/paren… Materials: Cooking Oil (about a cup) Water (enough to fill 3 cups of water) Food coloring (2-different colors) 3 clear plastic cups 1 or 2Test tubes w/covers, and something to keep it standing. We are using 1/2″ pvc plug (find it in your local hardware store) Small amount of clay or puddy (find it in your local hardware store) Container of 91% alcohol (can use 70%) Napkins (to wipe up spills) Safety glasses 1 pipette (aka eye-dropper) How to do it: Pour water into 2 of the plastic cups, fill it almost to the top. In the 3rd cup, fill it almost to the top with cooking oil. Add food coloring into the water, one color for each cup of water. Get a piece of the clay and roll it into a ball and place it in the 1/2″ pvc plug, this will be used to hold the test tubes in place. Set the test tube covers on the side, you will use it later. Using the pipette, put 5 drops of colored water into the test tube. It should be 1/2 full. Put your safety glasses on because you will be using the 91% alcohol, and we don’t want it splashing into our eyes. Fill the pipette with colored alcohol, and “dribble” the colored alcohol into the test tube filled with colored water. “Dribble” the colored alcohol about 3-4x, until it’s almost to the top of the test tube. Last, fill the pipette with some cooking oil and insert it into the filled test tube, stopping where the water and alcohol meets. Slowly squeeze the cooking oil between the water and alcohol. You should see the water and alcohol begin to separate. Use the test tube cap to cover your “UFO Blob”.