Have you always wondered how iridescent soap bubbles form? Here's a brief explanation:
It is the surface tension of water that forms soap bubbles. Pure water molecules are attracted to such a degree that they are always integrated into droplets, and hardly into membranes. What the detergents added to it do is reduce the intermolecular attraction of water, but water molecules still retain enough attraction to form a surface film.
When a child blows to form a bubble, the film stretches and creates a sphere. As the water evaporates, the pomp that had formed explodes.
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