======Water Into Wine======


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**Difficulty: **{{$demo.difficulty_description}}\\
**Safety: **{{$demo.safety_description}}\\
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**Alternative titles:** pH Indicator Color Change
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====Summary====                   
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====Procedure====  
  -Place a small amount of sodium carbonate in the bottom of one glass.  
  -In a second glass, mix water with about 10 drops of phenolphthalein solution.  
  -Pour the phenolphthalein mixture into the first glass and swirl—watch it turn red.  
  -To turn the “wine” back into “water,” blow gently into the liquid or add a little acid solution.



====Links==== 
Science behind water to wine - Imagination Station Toledo: 
{{youtube>GBAzx4kqcPg?}}\\


📄 Water Into Wine or Blood Chemistry Demonstration - Science Notes: [[https://sciencenotes.org/water-into-wine-or-blood-chem-demo/]]\\


====Variations====
  *Use three glasses: one for sodium carbonate, one for phenolphthalein solution, and one with dilute acid to cycle the colors.  
  *Present in wine glasses for a more dramatic effect.  
  *Try the [[water_to_wine_to_milk_to_beer|water to wine to milk to beer]] variation with other pH-sensitive mixtures.



====Safety Precautions====
  *Do not drink the solutions—phenolphthalein can have harmful effects.  
  *Wear goggles and gloves when handling sodium carbonate and acids.  
  *Dispose of the liquid safely down the drain with plenty of water.




====Questions to Consider====
  *Why does blowing into the liquid change it back to colorless? (Carbon dioxide forms carbonic acid, neutralizing the base.)  
  *What pH range causes phenolphthalein to appear red? (Between about pH 8.2 and 10.)  
  *How could this demonstration be used to introduce acid-base titrations?