Soap acts as a cleansing agent because ...

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(B) Soap molecules consist of a long hydrocarbon chain (hydrophobic tail) and a polar head (hydrophilic head). When soap is added to water,the hydroph

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Oil and grease dissolve in the hydrophilic center of the micelle.

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(B) Soap molecules consist of a long hydrocarbon chain (hydrophobic tail) and a polar head (hydrophilic head). When soap is added to water,the hydrophobic tails cluster together to form a micelle,trapping oil and grease inside the non-polar core. The hydrophilic heads remain on the outside,interacting with the water,which allows the grease to be washed away. Therefore,oil and grease dissolve in the hydrophobic (non-polar) center of the micelle.

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