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E-book Soap Making Made Easy
Soap acts as an emulsifier, meaning that it allows one substance to be dissolved into another, into which it would not dissolve otherwise. Soil contains grease and oil, which are not water-soluble; however, soap attaches itself to the grease molecules, loosens them, and allows them to dissolve in water, and be rinsed away. There are three types of energy which must be present in order for soap to work well; chemical energy, thermal energy, and kinetic energy. The chemical energy is provided by the soap and allows soil that can't be removed with just water to be loosened from the soiled surface and suspended within the soap molecules.
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