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======Whoosh Bottle======


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/* GREY BOX INFORMATION - Required                                                                     */
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**Materials: **{{$demo.materials_description}}\\
**Difficulty: **{{$demo.difficulty_description}}\\
**Safety: **{{$demo.safety_description}}\\
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**Categories:** {{$demo.categories}}
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**Alternative titles:**
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/* SUMMARY - Required                                                                                  */
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====Summary====                   
{{$demo.summary}}


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/* PROCEDURE - Optional                                                                                */
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====Procedure====  
  - Inspect a 5-gallon plastic jug for cracks, frosting, or damage and replace if flawed.  
  - Measure 20–30 mL of isopropyl alcohol into the jug. Recap the alcohol container and move it far from the demonstration area.  
  - Lay the jug sideways and swirl it for about 30–60 seconds to coat the interior and allow the alcohol to vaporize.  
  - Pour out any excess liquid alcohol and wipe the mouth and outside of the jug.  
  - Place the jug upright on the floor behind a safety shield.  
  - Dim the room lights.  
  - Using a match or wooden splint taped to a meter stick, carefully bring the flame just over or slightly into the jug’s opening.  
  - Observe the rapid ignition and the “whoosh” sound as flames burst out and dance inside the jug.  
  - After the flame subsides, allow the jug to cool before handling.


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====Links==== 
The Whoosh Bottle - Imagination Station Toledo: 
{{youtube>98Vkl1YnNFs?}}\\
Whoosh Bottle gone wrong - Lizlodude (this is included to highlight what can go wrong):
{{youtube>P7HzLO4eags?}}\\
📄 Whoosh Bottle - Flinn Scientific: [[https://www.flinnsci.com/api/library/download/bf2f0d16dd86411ea26eb0cb687dc593?srsltid=AfmBOoqwI0YOb5OGjhTiWb-hWmoR6s5WmgRyNchbW8im7yOy3tqUIpzq]]\\


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/* VARIATIONS - Optional                                                                               */
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====Variations====
None listed


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/* SAFETY PRECAUTIONS - Required                                                                       */
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====Safety Precautions====
  * Perform only in a well-ventilated room away from smoke detectors and sprinklers.  
  * Always use a plastic jug, never glass, to avoid shattering from gas expansion.  
  * Wear safety goggles and ensure all observers also wear eye protection.  
  * Use a safety shield and keep a fire blanket nearby.  
  * Keep alcohol containers capped and far from the demonstration area.  
  * Never use methyl alcohol (methanol) due to extreme volatility and violent combustion.  
  * Do not add alcohol to a hot jug; allow cooling before repeating.  
  * Keep ceilings at least 4 feet above the jug to prevent scorching.  
  * Dispose of excess alcohol safely and rinse the jug before storage.


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====Questions to Consider====
  * Why does swirling the alcohol inside the jug help prepare the demonstration?  
  * What role does activation energy play in starting the combustion reaction?  
  * Why does the jug produce a “whoosh” sound instead of a quiet flame?
  * Why must glass never be used for this demonstration?


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/* DEMONSTRATION INFORMATION - Required                                                                */
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