Did you know that soda is the most popular drink in America? In 2017, the average American drank 44.7 gallons of soda. Compare that to 28.3 gallons of bottled water!
There is much more to know about the exciting world of soda or carbonated drinks. Keep reading to find out all about it!
Why Does Soda Fizz When You Open It?
Other than causing the fizz in soda, carbonation adds a weak acid to your soda.
This weak acid does two things – it both acts as a preservative, as well as giving your soda a bit of flavor. But, does soda lose some of this carbonation when it is shaken?
You may recall that carbon dioxide is a gas. However, when it is forced into a tight space, such as a can or bottle of soda, it is forced to become a liquid due to the high pressure.
This pressure gets lower as the bottle cap or can tab is removed, which eventually causes the fizzy bubbles we all know and love.
The unopened can or bottle of soda traps gases in it, which causes an increase in pressure from within itself.
This causes the gases to escape with Atmospheric Pressure, resulting in a soda explosion!
Read more about this process in “Why Does Soda Explode When You Shake It?” towards the end of this article.
In the gas form, the carbon dioxide rises to the top of the soda can or bottle, which is then released into the atmosphere in the form of soda with a lot of fizz.
Chuck Wright says that gas doesn’t escape from unshaken liquid because of the surface tension of bubbles.
It takes a lot of energy for a small bubble to be formed, but once it is formed, small amounts of energy are needed to expand the bubble in bottled soda. Shaking a can or bottle of soda adds more small bubbles into it, allowing the dissolved gas to join bubbles that are already made instead of forming new ones. Look at the picture below for a slightly simpler explanation.
In other words, carbon dioxide exerts pressure when it is not dissolved. When the gas is exposed to air, it slowly goes into the atmosphere after being released into the air.
This causes the drink to go flat.
Why Does Soda Fizz When You Add Ice?
There is nothing like a cold glass of soda at a barbecue on a hot, summer day. But, why does soda fizz when ice is added to it?
The main reason is the ice pushes the gas bubbles out. As the ice is added to your soda or flat soda, it starts to get frothy (or, fizzy) as an attempt to get rid of more carbon dioxide. According to Gerard Liger-Belair, a physics professor in France, “to escape into the form of bubbles, the liquid needs some tiny imperfections in the glass.”
Dr. Daniel James Berger got his Ph.D. in organic chemistry.
He says that “adding ice can reduce carbonation in your soda by providing surfaces on which carbon dioxide bubbles can form.”
He also notes that since soda is mostly water, there is no chemical reaction occurring when ice is added to the soda container since it would have already happened. Dr. Berger also points out that your soda will dilute and taste weaker once the ice is put in.
How Long Does It Take A Shaken Soda To Settle?
It happens – you’re holding your soda, and you drop it, or the dog swats at it and rolls away. So, what should you do in order for the soda to be drinkable again?
One tip is to put your soda or soda flat can down on a flat surface and drum on top of it for 10-15 seconds. Tapping the top breaks up the bubbles, so they aren’t all in the same area.
If you’ve opened the bottle in the right amount, no liquid will escape. After you open it for the initial time, wait 15 seconds to open the bottle more. Then, wait another 20 seconds and open the entire bottle.
By the way, unopened soda can go flat as well if it is left out long enough. If it is not stored in a cold place, then soda can go flat within a matter of days! However, keeping it in the refrigerator prevents your favorite sodas from going flat.
Why Does Soda Explode When You Shake It?
Many ask, why does shaking soda make it explode?
Who hasn’t shaken a soda when they were a kid, excited to see who would open it next? You probably ran away, giggling, when they were chasing after you covered in it!
But, have you ever wondered exactly why soda explodes when it is shaken?
When a can or bottle of soda or carbonated water is unopened, there is an equilibrium between that is dissolved carbon in the tap water – potassium bicarbonate mixture and the carbon gas floating at the top of the can or bottle. Opening the can or bottle of soda results in fizzing.
This is because the pressure that has kept the carbon dissolved is released.
Let’s say that your friend intentionally shakes your soda, and they think you don’t know about it. All you would have to do is let your soda sit unopened for a while, before eventually opening it.
This allows the large bubbles to work themselves out of the soda, and back to the top of the soda where they should be in the first place.
Now, you know more about the science behind soda and the fizzing process.
Now go enjoy a nice cold unshaken Soda!