How To Make Glowing Bubbles

Putting a Grease Fire out with Water

Under our skin.

[Reddit/scienceimages]

Want to make a rubber egg? Your students do.

http://www.coffeecupsandcrayons.com/make-rubber-egg-science-experiment/ http://ow.ly/i/5haa2

This is what happens when you put molten salt into water - Full video

Coke cans in acid and base. Destroying things with science!

Watch: This pen will supercharge your artwork, thanks to its conductive ink.

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When you have some dry ice hanging around in your office...

We had some leftover dry ice in our office, so we spent all afternoon playing with it.

In water:

Making a tornado:

Making ice scream (turn on the sound to hear it!)

and inflating balloons (there’s a little nugget of dry ice inside the balloon here):

Octopuses are smart! They play with toys, pull off daring escapes, and are masters of disguise. But they’re also smart in a lot of ways that the human mind probably can’t comprehend. For example, they basically have independent brains in their arms!

Heat and air movement demonstration 2 of 2. When you light a tea bag on fire, it creates a column of hot air that’s inclined to rise. And when the tea bag becomes light enough, it gets carried along!

If you want to try it yourself, there’s more information here. Make sure you’re using a simple paper teabag that you can unfold into an approximately cylindrical shape–fancy ones, like the pyramids, won’t work. And please take appropriate fire safety precautions! I keep a fire extinguisher handy for these demos.