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Difficulties and Future Questions:

  • Shaking the bottles started off being difficult. I tried to shake it up and down, but that made too much carbonation and almost overflowed.
  • I also think that some of the carbonation was lost in the time between opening the bottle and putting the balloon on the bottle. This can lead to differences in the balloon sizes.
  • How long would it take for the carbonation to stop and the balloons begin to shrink?
  • How do name brand sodas compare to store brand sodas in carbonation?

Me with the exploding Dr. Thunder.

Which Sodas Have the Most Pop? A Study of Soda Carbonation.

Data Collected:

Investigation Description:

Step 1:

Once I set up everything, I started with the first soda and opened the bottle and placed the balloon over the entire top of the bottle so that there was no way for the air to escape. Once the balloon was on I rocked the soda bottle back and forth 5 times to help the balloons expand.

I began by setting up my materials.

One 2 liter bottle of each of the following sodas:

Dr. Thunder

Cola

Root Beer

Fanta Orange

Peach

Sprite

Mountain Dew

Ginger Ale

10 balloons

10 Post-It Notes

Pen

Timer or Clock

Step 2 and 3:

Once all the balloons were on and the bottles were shaken I left them alone for 1 hour. I measured the balloons after one hour at the widest point on the balloons.

I recorded those numbers and then left them for another hour. After that hour I measured the balloons again at the widest point and recorded the data.

This completed the experiment.

Checking on the soda at 5pm.

By Katherine Freer

My roommate's dog wanted to help.

Hypothesis:

Independent, Dependent, and Controlled Variables:

  • My hypothesis is that the darker sodas will have more carbonation than the light or colored sodas because the syrup in it holds the carbon dioxide that makes the carbonation more than the other sodas syrups. I also believe that Dr. Thunder will be the most carbonated of the dark sodas.
  • This is based on my research where I found that there are only a few ingredients in soda, which makes me think there is one ingredient that makes it have more or less carbonation.
  • My independent variable is the different sodas I have chosen to use in the experiment. I will have light or clear sodas, dark colored sodas, pink soda, and orange soda to test during the experiment.
  • My dependent variable is the size of the balloons on the bottles of soda after they have been shaken. I will be measuring the size of the balloon after the bottle has been shaken after a period of time.
  • My controlled variables are the number of shakes that each bottle receives and the time that each bottle has with the balloon on it.

Question and Research:

  • Which soda will have the most carbon dioxide and therefore have the most carbonation?
  • Soda is made of carbonated water and syrup to give it flavor. The carbonated water is under pressure in the soda bottles and when opened, you hear the pressure being released. Carbon dioxide is a part of carbonated water and is a gas.
  • When the bottles are opened this gas begins to escape and when the balloons are over the opening, the gas spreads into it.
  • Lansing State Journal. (October 7, 1992). How is soda pop carbonated? Retrieved April 28, 2015, from: http://www.pa.msu.edu/sciencet/ask_st/100792.html
  • June Kane. eHow. (February 19, 2015). Science Projects on Which Sodas Have More Fizz. Retrieved April 28, 2015, from http://www.ehow.com/info_7961377_science-projects-sodas-fizz.html

Carbon Dioxide in Soda

Findings from the Investigation and Conclusion:

I found that Sprite had the largest diameter for it's balloon and even though it shrunk it was still the largest. It had the most carbonation. This soda was clear.

The second largest diameter soda was Dr. Thunder. It had the second largest amount of carbonation. This soda is dark in color.

Ginger Ale was the smallest in diameter. This soda had the least amount of carbonation. This was a clear soda.

After completing the experiment I realized that the syrup color does not effect the carbonation level. It all depends on how much carbon dioxide the companies decide to put in the water that is used for the soda. Carbon Dioxide is one of the ingredients and it is added in different amounts depending on the soda.

I believe that from the findings I can eliminate the color of the soda being a factor in how carbonated the soda is or is not. My hypothesis is incorrect according to the data that I found in my experiment. Darker sodas do not always have the most carbonation. I was correct that Dr. Thunder had the most carbonation of the dark sodas.

How I Collected and Analyzed the Data:

I collected my data by writing down the diameter of the balloons after shaking the soda bottles and waiting the specific amount of time. I used a measuring tape and collected measurements in inches and then wrote them down in a table that I created using Microsoft Word.

I analyzed my data by looking at the diameters of the balloons for each of the types of soda and I saw which soda had the most inches. I then looked to see what particular color soda had the largest diameter as well.

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