
This Halloween Science Activity is one of our favorite baking soda and vinegar experiments. I love putting together fun activities that are themed around holidays and one of my 7-years-olds favorite holidays is Halloween so, of course, I had to put together a baking soda and vinegar activity.Â
This classic baking soda and vinegar science experiment never gets old in our house—we just find new ways to put a new spin on an old favorite. Today we’re sharing this easy Fizzy Shapes Kids Science Experiment to show the reaction of a base and acid. We use some cookie cutters and plastic molds to form baking soda shapes, freeze them, and then watch the science happen as we mix baking soda and vinegar!

