Today we had monsters in our classroom.
We were able to invite parents in and create our very own monsters, they were really scary!
With a little bit of science we were able to make our monsters foam out of their mouths!
This is why…
Vinegar (an acid ) and bicarbonate of soda ( an alkali ) react together to neutralise each other. This reaction releases carbon dioxide, a gas which is the bubbles you see, these bubbles make the washing up liquid bubble up to give the reaction shown above.