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Question
in the video: when the soap was added to the water, the penny could hold
less drops of water because the soap broke the hydrogen bonds
exactly the same amount of drops as the water with no soap
more drops of water because it made the hydrogen bonds stronger
Soap is a surfactant. It reduces the surface - tension of water by breaking the hydrogen bonds between water molecules. When the surface - tension is reduced, the penny can hold fewer drops of water.
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less drops of water because the soap broke the hydrogen bonds