Surfactants are compounds that decrease the surface tension between two liquids, a liquid and a gas, or a liquid and a solid. You’ll find surfactants acting as detergents (in laundry soaps), emulsifiers (like egg yolks and soy lecithin), foaming agents (like in foaming soaps, shampoos, and toothpaste), and dispersants (usually added to prevent clumping, like in engine oils and in concretes so it flows correctly before setting). Not all surfactants are the same, but they all are aimed at doing a particular job.
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C1000 Experiments: 96, 97, 98, 99, 100, 101, 102, 103, 104, 105
C1000 Experiments: 106, 107, 108
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