======Oil and Water Emulsification======


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**Materials: **{{$demo.materials_description}}\\
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**Safety: **{{$demo.safety_description}}\\
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**Alternative titles:** Soap as an Emulsifier
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====Summary====                   
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====Procedure====  
  - Fill a clear glass or flask with some water.  
  - Add oil (or kerosene) to the water and swirl gently. Observe how the two liquids separate into layers.  
  - Add a squirt of dishwashing detergent or liquid soap.  
  - Swirl or shake the flask again and observe how the oil breaks into droplets suspended throughout the water.  
  - (Optional) Add food coloring to color the water for easier visualization.



====Links==== 
How Does Soap Mix Oil and Water? - Thompson STEM Engagement: 
{{youtube>sbCODXfczCg?}}\\

Oil, Water and Dishwashing Liquid: Science Experiment - momofjoakim: 
{{youtube>RmB-mAMSvcQ?}}\\

📄 Easy Emulsifier Chemistry Demonstration - Science Notes: [[https://sciencenotes.org/easy-emulsifier-chemistry-demonstration/]]\\

====Variations====
  * Use different types of oil (vegetable, olive, mineral) and compare results.  
  * Try natural emulsifiers such as egg yolk or mustard instead of dish soap.



====Safety Precautions====
  * If using kerosene, conduct the demonstration in a well-ventilated area and keep it away from flames or sparks.  
  * Do not drink or taste any materials used.  
  * Wash hands after handling oils, kerosene, or soap.  
  * Clean up spills promptly to avoid slipping hazards.




====Questions to Consider====
  * Why don’t oil and water normally mix? (Oil is nonpolar while water is polar, so they are immiscible.)  
  * How does soap act as an emulsifier? (Soap molecules have both polar and nonpolar ends, allowing them to interact with both oil and water.)  
  * Why do oil droplets remain suspended after soap is added? (The soap molecules surround the droplets, preventing them from clumping back together.)  
  * What role do emulsifiers play in everyday life? (They help make foods like mayonnaise, salad dressings, and ice cream, and aid cleaning by suspending oils and dirt in water.)