If you eat or drink too quickly you might find you burp! Burping is how extra gas is expelled from the body. The gas is forced out of the stomach up the oesophagus and out of the mouth!
These burping balloons are very easy to set up and great fun to watch. The balloons will only inflate a little, so don’t expect anything too impressive!
If you like this activity you’ll LOVE my other activity ideas for learning about the body!
2 plastic or glass bottles
1 teaspoon of dried yeast
1 teaspoon bicarbonate of soda ( baking soda )
1 teaspoon sugar
20 ml vinegar
20ml warm water
Carefully add 1 teaspoon of yeast and 1 teaspoon of sugar into one bottle.
Pour about 20ml of warm water into the same bottle and quickly pop a balloon over the top of the bottle.