Dry Ice Bubbles

This week, in preparation for Halloween. We did some spooky science.

One of the activities was making bubbles with dry ice.

1) Put a chunk of dry ice and a half cup of warm water in a cup.

2) dip a pipe cleaner into bubble solution

3) Slide the pipe cleaner over the mouth of the cup to stretch a film over the opening

4) Watch the escaping CO2 gas fill the bubble with fog

Or just drop a chunk of dry ice directly into the bubble solution. This will make a foggy foam "grow" out of the cup.

We use Exploratorium's home made bubble solution recipe.