======Carbonated Drink Shake Up======


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**Alternative titles:** Soda Can Shake-Up
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====Summary====                   
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====Procedure====  
  -Take a sealed can of soda and shake it vigorously.  
  -Open the can immediately over a sink or pan and observe the spray of foam.  
  -Shake another sealed can, but this time flick or snap the sides of the can firmly with your finger while rotating it several times.  
  -Open the can slowly and observe the difference in foaming.  
  -Repeat the experiment with diet soda and note whether the same tapping method prevents foaming.



====Links==== 
Soda Can Shake-Up - Sick Science!: 
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📄 Soda Can Shake-Up - Steve Spangler: [[https://stevespangler.com/experiments/soda-can-shake-up-experiment/]]\\

====Variations====
  * Test different soda brands or flavors to compare foaming effects.  
  * Try the experiment with bottles instead of cans.  
  * Investigate how temperature affects foaming (cold vs. room temperature soda).  
  * Compare results of tapping the top of the can versus snapping the sides.



====Safety Precautions====
  * Open shaken cans only over a sink, tray, or outdoors to avoid mess.  
  * Clean up spills immediately to prevent sticky surfaces.  
  * Do not shake cans near electronics or important materials.




====Questions to Consider====
  * Why does shaking a can cause soda to spray when opened? (Shaking creates nucleation sites where carbon dioxide bubbles form; when the can is opened, the bubbles expand rapidly and push liquid out.)  
  * Why does snapping the sides of the can reduce spraying? (It dislodges bubbles from the walls, allowing them to rise to the top where they can escape without carrying liquid.)  
  * Why do diet sodas behave differently? (They may contain more dissolved CO2 or unique interactions between sweeteners, preservatives, and water.)  
  * How does Boyle’s Law relate to this experiment? (When pressure decreases upon opening, gas volume increases, forcing bubbles to expand.)