Square Bubbles? Bubbles are round because a sphere is the shape that is the most stable for them—a sphere is more stable than a square or a triangle or any other shape. But when a bubble is surrounded by other bubbles, these "side" bubbles push against the "center" bubble, squishing until it has corners and sides—like a square! That's what happened to your bubble. Square bubbles? Try different shapes, like a triangle. Try dipping your hand in the solution like Grace to see if your able to put your hand through the bubble. Let us know in the comments if you were able to make other shapes?

square bubbles experiment