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Balloon Inflating

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The boys love playing with balloons and I hate blowing them up. 
This was great and I wasn’t breathless at the end.
 
Balloon Inflating Experiment a

What you need: 
1.25L bottle
white vinegar
water
bicarb soda 
balloon
funnel

Half fill the bottle with half vinegar and half water. I used around 3 cups of each.
Using a funnel, fill the balloon up with bicarb soda.
I then went outside and stretched the balloon over the top of the bottle. Leave the balloon dangling low until you are ready to inflate.
The boys then took turns at lifting the balloon so that the bicarb soda fell into the bottle.
When the soda hit the vinegar and water it bubbled and then the balloon started to inflate.

 
 
 
 
 
 
 
 
 
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Balloon Inflating

Ingredients

  • 1.25 L bottle
  • white vinegar
  • water
  • bicarb soda
  • balloon
  • funnel

Instructions

  • Half fill the bottle with half vinegar and half water. I used around 3 cups of each.
  • Using a funnel, fill the balloon up with bicarb soda.
  • I then went outside and stretched the balloon over the top of the bottle. Leave the balloon dangling low until you are ready to inflate.
  • The boys then took turns at lifting the balloon so that the bicarb soda fell into the bottle.
  • When the soda hit the vinegar and water it bubbled and then the balloon started to inflate.

I saw this in a book called Kitchen Science by Chris Maynard