More Fun with Dry Ice

 Since we had extra dry ice from the Astronomy class, the Zoomlians had fun experimenting.

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.

One thing we found was that it's easier to see how much gas the dry ice is giving off if you capture it in bubbles - a simple matter of adding a bit of soap.

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!

Then we took the rest of the dry ice outside where it was warm and humid.

It was lots of fun to watch the dry ice sublime in the breeze!