So goes life, it seems that it keeps going even when you have other plans. So, because there is still a little daylight and I'd like to try to keep my promise to myself, I am posting a re-run, one of the blogs about which I got the most comments.
SAFETY WARNING AND DISCLAIMER: Do not try this at home!
First posted on:
Thursday, January 26, 2006
How Sublime
Today, we received a gift in the mail from Omaha Steaks. Now, you might think that the gift was meat, and certainly, there was some in the package. But the real gift was a bag full of dry ice. We were headed to the library, but I recognized the fleeting opportunity for a fun science experiment. So, I took it upstairs and cautioned everyone not to touch it! That was instant permission to squeal. We put some in water:
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We talked about CO2, how the solid sublimes directly into gas, whether hot or cold water was more effective. Then, we put out a flame with the gas. What else could we do? Well, we filled up some baggies and watched them pop. After the first squeal or two, that just wasn't enough bang, you know? So we tried something more: (note for you safety geeks, we were behind a protective door)
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