How To: Make bubbling acid with ammonia and dry ice

Make bubbling acid with ammonia and dry ice

In the mood for a little mad science? In this home-science how-to from Steve Spangler, we learn how to prepare a bubbly, color-changing concoction using water, ammonia, a universal indicator (cabbage juice will do fine), dry ice, gloves and two plastic cups. Now, repeat the process, this time adding a teaspoon of ammonia when you add your universal pH indicator.

The instructions are as follows: First, fill one of the plastic cups with water. Next, add a teaspoon of your universal indicator or cabbage juice and stir. Then, with your gloves, add a few pieces of dry ice.

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