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The diagrams show how detergent removes oil droplets often contained in dirt. When the detergent dissolves in water, detergent molecules group themselves around an oil droplet (a). The water-repelling part of the molecules (light area) projects into the droplet, while the water-soluble part (dark area) remains in the water (b). The oil is held in suspension by the emulsifying action of the detergent and is carried away with the dirty water (c). steps in the manufacture of synthetic detergents
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Submerged sperm whale off east Sri Lanka coast, mammal
How Did the Sperm Whale Get Its Name?
Illustration for Demystified "How Dangerous is Quicksand"
How Deadly Is Quicksand?
Ahura Mazda - relief of the Zoroastrian god Ahura Mazda at the ancient ruins of Persepolis in Iran. Also known as Ormazd Zoroastrianism,
Which Religion Is the Oldest?
Flags of the countries of the world (flagpoles).
How Many Countries Are There in the World?
Statue of Nostradamus
Nostradamus and His Prophecies
African Americans demonstrating for voting rights in front of the White House as police and others watch, March 12, 1965. One sign reads, "We demand the right to vote everywhere." Voting Rights Act, civil rights.
Timeline of the American Civil Rights Movement
Chinese pictograph, calligraphy tablet of Huang Tingjian, a famous calligrapher in Ancient Song Dynasty. The background of Chinese cultural elements.
The World’s 5 Most Commonly Used Writing Systems

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Photos

The diagrams show how detergent removes oil droplets often contained in dirt. When the detergent dissolves in water, detergent molecules group themselves around an oil droplet (a). The water-repelling part of the molecules (light area) projects into the droplet, while the water-soluble part (dark area) remains in the water (b). The oil is held in suspension by the emulsifying action of the detergent and is carried away with the dirty water (c).
steps in the manufacture of synthetic detergents
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Key People

William Hesketh Lever
British entrepreneur