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About Sue Kayton
Expertise
I can answer almost any student science question! I especially like ones involving silkworms, spacecraft and computers.

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MIT graduate. Have worked as an engineer and taught science for 28 years.
 
   

You are here:  Experts > Science > Science/Nature for Kids > Science for Kids > carbonation

Science for Kids - carbonation


Expert: Sue Kayton - 10/9/2009

Question
QUESTION: I am working on a science project and trying to find out how to figure out the amount of carbonation in various sodas.  i have the balloon procedure and simple things like that, but was wanting something a little more advanced (high school) but have not been able to find any detailed procedures or ideas.  can you help

ANSWER: Please be more specific about what you are trying to do.  To do more sophisticated stuff, you usually need more sophisticated equipment, such as pressure gauges.

---------- FOLLOW-UP ----------

QUESTION: I guess we don’t know what we are supposed to do.  Can you explain in easier terms about the carbonation process, how we can find out the levels in different soda’s?  I am not even sure we understand the balloon idea.  Thank you.

Answer
Here's the idea.  There is gas dissolved in the soda.  Get three different bottles of soda, all the same size.  Make sure all the bottles are at the same temperature (all on the counter or all in the refrigerator for a while).  Get three identical balloons.  Open the soda bottles and immediately put a balloon over the top of each.  Now shake up the soda so the gas will come out.  The balloons will inflate.  The soda with more gas will inflate the balloons more.

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