More recently I was prompted to revisit bicarb and vinegar as I have noticed a number of posts about Fizzing Outdoor Paint. I think the original can be found at Quirky Momma and the one I saw first is at Hands on as we Grow, here. There are many versions out there! We did this last week at pre school and it was a great success. I also let the children pour small bottles of vinegar onto bicarb mixed with paint. The result was overflowing bubbles and lots of laughter!
I am looking for more chemistry activities to do so ideas are very very welcome!