MadSci Network: Chemistry

Subject: What happens to the water molecules when I add Baking Soda and Citric Acid?

Date: Sun Oct 1 02:21:51 2000
Posted by Haley Kincannon
Grade level: 4-6 School: Plato Elementary
City: Duncan State/Province: OK Country: 73533
Area of science: Chemistry
ID: 970381311.Ch

Hi! My name is Haley and I am 11 years old. I am having trouble finding 
out exactly how bath fizzies fizz. I know that baking soda is a base and 
that citric acid is and acid and that when I mix the two together with 
water, they fizz. I also know that a water molecule is 2 hydrogen atoms 
and 1 oxygen atom. What I don't know is what happens to the water molecule 
when I add the baking soda and citric acid. Does the water molecule change 
to have more hydrogen atoms attached to it or do I have different kinds of 
molecules in the bowl or do they all turn into only one kind of molecule? 
My mom said that carbon dioxide makes the fizz, so do I have water 
molecules and carbon dioxide molecules in my bowl?

Also, I would like to know if it would be safe to mix the baking soda and 
citric acid in other liquids besides water. I would like to see what 
happens when I mix them in milk, vinegar, and lemon juice but my mom said 
I better ask if it is safe so I don't make a dangerous mixture.

Thank you very much for your help. If you would like, I can send you one 
of the bath fizzies that my mom and I made tonight. They are really cool.

Your friend,

Haley Kincannon

Re: What happens to the water molecules when I add Baking Soda and Citric Acid?

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