![]() ![]() Blow a bubble from one of the solutions (outside is best, but over a kitchen sink or any other place that can stand to get a little sticky is okay).What is the consistency of the glycerin and corn syrup? Does one seem more viscous (thick and sticky) than the other, or do they have about the same viscosity? Mix the contents of the "Glycerin" and "Corn Syrup" cups. And to the "Corn Syrup" cup, add one tablespoon of corn syrup. To the "Glycerin" cup, add one tablespoon of glycerin.Why do you think you need detergent in every solution? You should see small bubbles forming as you mix in the detergent. Mix the detergent in each cup with a spoon. To all three cups, add two tablespoons of detergent.Make two more pipe cleaner wands this way, making sure their diameters are all the same. Make a pipe cleaner wand by pinching a pipe cleaner in the middle and bending half of it into a circle, twisting a little bit of the end to secure it.To the "Detergent Only" cup, add an extra one tablespoon of water.To all three cups, add one cup of distilled water.Label the three cups "Detergent Only," "Glycerin," and "Corn Syrup," respectively.Glycerin, small bottle (available at a drugstore or pharmacy).Liquid dishwashing soap (for example, Dawn or Joy brand).Three cups of distilled water (which can be purchased at the supermarket).Three large cups or jars with a wide opening.Other substances, such as corn syrup or glycerin, can be added to the solution of water and detergent to make even better bubbles. This decreases the pull-or attraction–that the water molecules exert on each other, lowering the surface tension of the solution. The detergent molecules increase the distance between water molecules and reduce those molecules' ability to interact with each other. When a soapy dish detergent is added to water, it lowers the surface tension so that bubbles can form. In fact, it's too high to allow big bubbles to form. This gives plain old water a high surface tension. The water molecules at the surface of the water do not want to move up, away from other water molecules to which they are attracted. This is what creates the force known as surface tension. But they have no water molecules above them to be attracted to (since it is just air up there). At the surface of the water, these water molecules are attracted to the water molecules around and below them. In a container of water, the tiny water molecules are attracted to each other, which means that they're constantly pulling on each other. Which solution will create the best bubbles? ![]() Add other things, such as corn syrup or glycerin, to improve the bubbles. When detergent is added to water, it lowers the surface tension so that bubbles can form. This is because the surface tension-the forces holding the molecules of a liquid together-of water is too high. If you try to make bubbles using normal water, you will quickly see that it doesn't work very well. Adding soap (such as the kind you use to wash dishes in the sink) to water changes the surface tension of that water, and this creates a great solution to make bubbles from. Have you ever wondered what makes a bubble form? The secret to making bubbles is surface tension. ![]()
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