Flicking on the side of soft drink cans for twelve times won’t make it splash
Opening soft drink cans is a big problem for everyone. Sometimes it splashes out all over the place. Some people came up with a solution, believing that flicking on the side of the can reduces the amount of gas in the drink and won’t make the drink splash. I’ve seen one science show stating that “Flicking the can for twelve times won’t make it splash”, so I want to prove whether it’s real or not.
Equipment :
4 soft drink cans
Method :
1. Shake two cans
2. Pick one can from the group of shaken can and not shaken can, then flick both for 12 times.
3. Open all cans.
Results
Can #
|
1
|
2
|
3
|
4
|
Shake?
|
No
|
No
|
Yes
|
Yes
|
Flick?
|
No
|
Yes
|
No
|
Yes
|
Splash?
|
Yes, not so much.
|
No
|
Yes, less than #4.
|
Yes, much.
|
Discussion
From the results, it turns out that #2 doesn’t splash. Maybe this happens because I left it still with longer time than #1. I’ve tried this before and both didn’t splash. On the other hand, the can number 4 that I’ve shaken and flicked almost explodes when I open it. This happens because when I shake the can, gas bubbles in the can float up from the side of the can to the top. These bubbles would turn into gas and stuck around the lid. When I open the can, gases explode out and the drink splashes out. Moreover, shaking the can is adding more energy to the system, but flicking it is to increase more energy to the system, so that won't help.
In conclusion, flicking the can doesn’t help to reduce gases or prevent the drink from splashing. I suggest that you should leave it still for about 30 seconds before opening it.
References
[1] Nicholas Gerbis, "Does tapping a soda can prevent it from foaming over?", Available: http://www.livescience.com/34159-tap-soda-can-carbonation.html [2016, March 1]
[2] Barbara Mikkelson, "On Tap", Available: http://www.snopes.com/science/sodacan.asp [2016, March 1]
Suphakorn Suphapolthaworn (Som) M.5 #18
57010020
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