As if having Lou Malnati's isn't wonderful enough, the pizzas come packed in dry ice to keep them frozen during shipping. For the last 20 minutes, Brendan and the kids have been playing with the chunks of dry ice. I've been observing the observations.
First, they talked about safety measures--dry ice is so cold it can burn you! How is that possible--Cold? Burn? An interesting discussion about what happens to skin when it's exposed to extreme temperatures ensued. So we all decided that dry ice is Not For Touching. Also, don't stick your hands in the bowl.
Once everyone agreed to abide by the rules, Brendan helped Ryan add a chunk of dry ice to a clear glass mixing bowl that was about 1/3 filled with tap water. Amazing! The bubbles were instantaneous and large and delightfully loud and the smoke was super fun. We talked about Scooby Doo (several mysteries involved the use of much dry ice) and now plan to have dry ice smoke at our next annual Halloween bash.
We answered the following scientific questions:
- Is the smoke hot or cold? Cold
- Is the bowl of water hot or cold? Cold
- Is the smoke wet or dry? Dry
- What happens when you scootch (that's a technical term, you know) a piece of dry ice across the countertop? It floats, land-speeder-like, on a cushion of smoke.
- What does the smoke do if you blow on it? Floats all over the place.
- What happens if you blow quickly? The smoke almost disappears.
- What happens if you blow slowly? More smoke!
- What happens when a friend drops by and you leave two small children alone with a bowl of water (the dry ice being used up at this point)? Things get wet. Very, very wet.