How much fizz is in pop

[KLarr26]

Hello,
I am doing a Grade 6 science project and we have chosen the question, how much fizz is in soda/pop. We are a bit stumped on which direction we should take since there are many different variables. Help narrowing it down would be great! We thought of doing, which pop had more fizz (and thought of adding/changing it to- how long does fizz last), in 2 different flavors of soda.
We are not sure how to test this. We thought of measuring how much fizz is in a clear cup once we pour it, then timing how long it takes for it to go away. We have also thought of testing cold vs room temp.
Help!

[calixte]

Hello!

This is a great experiment idea! You could test which soda has more fizz by pouring the same amount into clear cups and measuring how high the bubbles rise and how long they last. Another idea is to see how long the fizz stays by checking for bubbles over time or stirring to see when it stops. You could also test if cold soda holds fizz longer than room-temperature soda. If you have a scale, you could even weigh the soda before and after the fizz is gone to see how much gas escaped. Good luck!