Why does soap make bubbles?
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Transcript
Have you ever wondered why soap makes so many bubbles?
Soap mixes with water and hugs the air. A thin, wet skin forms around each little puff of air.
Water pulls together, but soap helps the water spread out. That makes the bubble skin stretchy instead of snapping right away.
More air can fill the stretchy skin and make bubbles bigger. Then the bubbles float, shine with colors, and pop.
So that's why soap makes bubbles: it helps water make stretchy skins around air. That lets bubbles grow and float!
For grown-ups: the science
Soap helps water make stretchy skins around little bits of air, making bubbles.
Soap molecules have one end that is attracted to water and another that avoids water. At the air-water surface, soap lowers surface tension and forms a stabilizing layer, so thin films can surround air and last longer than plain-water bubbles.