I was craving pancakes—until I opened the baking cupboard and found a jar of baking soda with a label from the early 2000s. Could it still work? Or had my grandmother cleverly refilled it over ...

You may have used vinegar and baking soda before to make bubbles. In this experiment, we add a little dish detergent to make the bubbles last longer and see if you can use chemistry to control the ...