SOAP.

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Presentation transcript:

SOAP

Soap vs. Detergents - essentially the same - true soap is made from a fat or oil with a sodium or potassium salt - detergents are artificial

Oil and Water Non-Polar Slightly Polar Overall = Non-Polar and doesn’t interact with water When mixed, the water segregates from the oil because it is attracted to itself.

Soap Formation Saponification Reaction

Soap Molecule - interacts with water Non-Polar – interacts with oil/fat - Hydrophobic - surrounds fat molecules Polar+Ionic Charge – Hydrophillic - interacts with water

Soap and Fat/Oil Interaction

How does soap kill bacteria and viruses? Soap disrupts their membranes and breaks them apart

“Anti-bacterial” Soap Adds specific chemicals such as Triclosan, which enters bacterial cells and disrupts their enzymes. May also be an endocrine disruptor in humans. ALL SOAP IS ANTI-BACTERIAL

Detergents and Oil Spills - Oil blocks movement of oxygen into the water and coats marine mammals and birds - Detergents emulsify oil into smaller pieces so microbes can digest it - Dawn Dish Detergent

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