We looked at putting the dry ice into water, alcohol, and hydrogen peroxide.
The alcohol was interesting because the bubbles were smaller (alcohol has less surface tension).
The hydrogen peroxide was interesting because it seemed to bubble at a faster rate.
This also showed what was up with the hydrogen peroxide. Some of the bubbles were misty with the cold CO2 coming directly from the dry ice.
But some of the bubbles were clear oxygen from the hydrogen peroxide breaking down into oxygen and water!
It was lots of fun to watch the dry ice sublime in the breeze!
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