If you’ve ever made an erupting volcano model you most likely used baking soda and vinegar to make it erupt. The baking soda and vinegar react to neutralise each other ( vinegar is an acid and baking soda an alkali ) releasing carbon dioxide which are the bubbles of gas you see. If you add a little washing up liquid ( dish soap ) the foam becomes thick, a little like lava!
Baking Soda and Vinegar Reaction
Baking Soda + Vinegar —-> Carbon Dioxide + Water + Sodium Ion + Acetate Ion
You can read more about the chemistry behind the baking soda and vinegar reaction here.
Now you know the science behind the reaction why not try one of our many explosive baking soda and vinegar experiments. One of our favourites is fizzy colour changing potions! These use red cabbage indicator for the colour changing part and the vinegar and baking soda reaction to make the fizz!