Bubble Fun! Try this bubblicious experiment and then tell us what you discover!   What You Need: Water Rubbing alcohol vegetable oil food coloring glass jar with lid medicine dropper Tip: You can use a straw if you don’t have a medicine dropper. Dip the straw into the liquid and cover one end with your finger. A small amount of liquid will be stuck inside the straw. When you release your finger the liquid will spill out. Question: How do different liquids interact? 1. First, fill the jar about half full of water. Shade it with a few drops of food coloring. 2. Then, use an eye-dropper to put a few drops of oil in the water. 3. Tilt the jar on a slight angle. Gently trickle the rubbing alcohol down the side of the jar until it covers the cooking oil. 4. A small ball of oil will form between the alcohol and the water. 5. Put the lid on it. Save your luscious liquid experiment on a sunny window! A Scientific Explanation: Different liquids are made up of different densities of molecules. Density is the amount of molecules that are crammed into one space. Water molecules are more packed together than oil or alcohol molecules. This is why the oil and alcohol float on top of the water. EXTRA! EXTRA! Alter the order you put the liquids in the jar. Can you explain what happens? THAT IT IS COOL!!!!!!!!!!!!!!!!! - Samantha L. First we put water in a glass. Then, we put food coloring in the glass. The we added vegetable oil in the glass. Then we added alcohol. Then we saw bubbles! - Zohair Z. IT WAS GREAT! - Bliss B. When I let the water sit, it evaporated it looked wicked to me and it was a blast. - Emily D. When we added the alcohol, the oil made one great big huge bubble that spread out to the side.  When we added more water, it looked like little dots under the water that floated to the top.  Now there's bubbles stuck underwater to the side of the jar, and some stuck under a layer of alcohol. - Thea & Paul It was fun! - Trizzia A. I found out that when you drop a drop of red liquid the water turns red and it looks cool!!!!! - Kimberly C. When I did the experiment it was so fun. Also when I finished the experiment bubbles came out. I think that the vegetable oil did the best job making the bubble. - Michelle R.