Home School Science : Balloon Blow Up!


As most of you know, we home school our children. The kids love their weekly science sessions. This week we learned what happens when you mix baking soda and water. We also learn why the combination reacts the way it does once combined.

The teens did the research and the boys did the actually experiment and guess what, we are all alive to talk about it.:)  DSCI0008

The Experiment

We inflated a balloon using vinegar and baking soda. We allowed the kids to use different amounts of materials to get different results. Then we left it to see what would happen. After a few days the balloon deflated and then got sucked into the bottle. Next week, the teens will discover and share with the young guys why this happened.vinger baking

To make some balloon magic, we gathered the following materials:

  • Baking soda
  • Vinegar
  • Empty water bottles
  • Balloons
  • Funnels
  • Measuring spoon


1 Get a balloon. It doesn’t matter really what kind. Works well on both water and normal balloons. Put the funnel into the balloon. This will make it much easier to get the baking soda inside.
2.Grab the baking soda. We added about 4 teaspoons to each balloon at first but we allowed each child to use different amounts to get different results.To get your balloons a bit bigger than ours, you could add 1 or 2 teaspoons more.
3. Quickly put the balloon over the bottle and lift the balloon up.
4. Now step back and have fun. Have your oohs and aahs then repeat the experiment!
When mixing the two chemicals in baking soda (called sodium bicarbonate) and vinegar (called acetic acid), you cause a chemical reaction to occur. – Deanna & Cassie Pressley
Baking soda and the vinegar create an ACID-BASE reaction. When combined/mixed they create a gas – carbon dioxide. Gasses need room to spread, so the carbon dioxide fills the bottle and then moves into the balloon inflating it.
~You do not want to add lots of different things with the vinegar because the balloon might explode. We only wanted enough carbon dioxide to be released during the reaction to blow up the balloon. We experimented with different amounts.
~Do not put the baking soda in the bottle. The baking soda goes inside of the balloon.
~this does NOT produce helium. Carbon Dioxide gas will inflate the balloons but they do not “fly” like helium inflated balloons (it is not the same kind of gas. This is meant to be a fun science experiment/demonstration.

baking  vinge


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