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Let's look at the system: clothes + grease + water + soap. To be more specific: a) We prefer to wear hydrophilic materials to manage moisture removal (sweat). The clothes could be cotton, wool or linen, which are naturally hydrophilic, or synthetic, like polyester or acrylic, which are naturally hydrophobic, but are treated with a finish to make them ...


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It is well-known that “Solids do not react together at room temperature over normal time scales and it is necessary to heat them to much higher temperatures, often to 1000 to 1500 °C, in order for the reaction to occur at an appreciable rate.” Ref 1. One reason this is true is that even when molecules of one solid diffuse into another solid, the resultant is ...


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