Bubble Snakes

What you need:

Empty water bottles

Bubble solution

Food coloring

Pipette

Rubber band

Washcloth

Adult supervision

What you need to do:

1. Use a utility blade to cut off the end of the water bottle.

2. Cover the end of the water bottle with the washcloth and secure it with a rubber band.

3. Dip the washcloth in the bubble solution and blow.

4. Observe and have some fun.

5. Observe the fun.

6. Use a pipette to drop food coloring to the washcloth.

7. Drop more colors.

8. Blow.

9. Blow and observe the bubble snakes.

Results:

Hundreds of bubbles come out from the washcloth.

(The girls continued to have fun in the proper space: the bathroom.)

Questions you may ask your children:

1. Can you count the bubbles?

2. What would happen if we blow the bottle?

3. What if we change to another type of washcloth?

4. Can we use socks instead of washcloth?

5. Why are the bubbles round? 

Explanation from Sick Science:

It's all about the magic of surface tension of water. Water molecule contains of hydrogen and oxygen atoms. Hydrogen atoms in one water molecule are attracted to oxygen atoms in other water molecules. They like each other so much. So why are the bubbles round? That is because the bubbles enclose the maximum volume of air in the minimum amount of bubble solution, so that's why they are always round. And why are the bubbles attach to each other when they come out of the washcloth? It's because of the hydrogen bonds that make bubbles possible.