Les expériences scientifiques
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LAIT MAGIQUE
Question: Comment le savon réagit dans le lait? |
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Deeper THinking - How does soap work ? Pourquoi le savon nettoie-t-il ?
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OIL and water don't mix !
But soap can interact with both Water and oil.
• Soap is made up of molecules with two very different ends.
• One end of soap molecule love water - they are hydrophilic (the head or polar).
• The other end of soap molecule hate water - they are hydrophobic. (the tail or non polar)
• Hydrophobic ends of soap molecule all attach to the oil.
• Hydrophilic ends stick out into the water.
• This causes a drop of oil to form. These drops of oil are suspended in the water. This is how soap cleans your hands - it causes drops of grease and dirt to be pulled off your hands and suspended in water. These drops are washed away when you rinse your hands.soa
• One end of soap molecule love water - they are hydrophilic (the head or polar).
• The other end of soap molecule hate water - they are hydrophobic. (the tail or non polar)
• Hydrophobic ends of soap molecule all attach to the oil.
• Hydrophilic ends stick out into the water.
• This causes a drop of oil to form. These drops of oil are suspended in the water. This is how soap cleans your hands - it causes drops of grease and dirt to be pulled off your hands and suspended in water. These drops are washed away when you rinse your hands.soa
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PE/SCIENCE game: Soap molecules
• There will be two students representing the soap molecules.
• One student will have a blue jersey representing the HEAD or POLAR part of the soap molecule (Hydrophilic) which LOVES WATER.
• The other student will have a yellow jersey representing the TAIL or NON POLAR part of the soap molecule that LOVES OIL.
• The class will be divided equally with water molecules (students in blue jerseys) and GREASE/FAT molecules (students in yellow jerseys)
• The SOAP molecule will run and try and tag the WATER and GREASE molecules. Once tagged they must attach themselves to the right part of the SOAP molecule.
• Once the soap molecules reach a limit of 6 students it will detach itself and form new SOAP molecule (2 students)
• There will be two students representing the soap molecules.
• One student will have a blue jersey representing the HEAD or POLAR part of the soap molecule (Hydrophilic) which LOVES WATER.
• The other student will have a yellow jersey representing the TAIL or NON POLAR part of the soap molecule that LOVES OIL.
• The class will be divided equally with water molecules (students in blue jerseys) and GREASE/FAT molecules (students in yellow jerseys)
• The SOAP molecule will run and try and tag the WATER and GREASE molecules. Once tagged they must attach themselves to the right part of the SOAP molecule.
• Once the soap molecules reach a limit of 6 students it will detach itself and form new SOAP molecule (2 students)