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======Dry Ice Flame Extinguisher======


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**Materials: **{{$demo.materials_description}}\\
**Difficulty: **{{$demo.difficulty_description}}\\
**Safety: **{{$demo.safety_description}}\\
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**Alternative titles:** Dry Ice Fire Extinguisher
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====Summary====                   
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====Procedure====  
  - Place a candle in a cup and light it.
  - Using a spoon or tongs, add a piece of dry ice into the cup near the candle.
  - Watch as the flame goes out once carbon dioxide replaces the oxygen.


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====Links==== 
Dry ice candle extinguisher - Sarah Thacker (produces carbon dioxide bubbles by mixing dry ice and warm water): 
{{youtube>sM65tfVXX9M?}}\\
📄 Candle & Dry Ice Science Experiments - Preschool Powol Packets: [[https://preschoolpowolpackets.blogspot.com/2016/12/candle-dry-ice-experiments.html]]\\
📄🎞️ Carbon Dioxide Flame Extinguisher - Rutgers-New Brunswick Department of Chemistry and Chemical Biology: [[https://chem.rutgers.edu/cldf-demos/1026-cldf-demo-carbon-dioxide-flame-extinguisher]]\\


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====Variations====
  * Try different sizes or amounts of dry ice to see how quickly the flame goes out.
  * Measure how full the cup gets with carbon dioxide by lowering a candle at different heights.  An alternative could be to have a larger container with several candles at different heights.
  * Produce carbon dioxide bubbles using warm water and dry ice, then pour it onto the flame.


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====Safety Precautions====
  * Always use adult supervision when working with fire and dry ice.
  * Handle dry ice with thick gloves or tongs - never touch with bare skin.
  * Do not place dry ice in the mouth or attempt to drink anything containing it.
  * Perform in a ventilated space to avoid buildup of carbon dioxide gas.
  * Be cautious with the open flame and keep flammable objects away.


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====Questions to Consider====
  * Why does carbon dioxide make the flame go out?
  * How is this experiment similar to covering a candle with a glass?
  * Why does carbon dioxide sink to the bottom of the cup instead of rising?
  * How does this demonstration connect to real-life fire safety methods, such as using a CO₂ extinguisher?


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