Volcano experiments are so much fun for kids! It is a great experiment to start of with younger kids, and they are amazed at the “magic” happening in front of their eyes!
We did this experiment in our sandpit. We used 50ml of vinegar mixed with a few drops of red food colouring(which turned out pink, but so pretty, we don’t mind) in the big jar. In a smaller jar we added 10 ml of baking soda/bicarbonate of soda and placed it in the sand.
Drops of the vinegar solution was dropped into the baking soda with a dropper. (Great for fine motor skills)
It started bubbling over the more we added.
A quick experiment, frugal too and you probably have all the ingredients in your pantry already. Go try it out with the kids! One could change the colours and experiment with different amount of baking soda.