phase changes

The Dry-Ice-in-Water Cloud

Have you ever wondered where the cloud comes from when dry ice is placed in water? If you think the answer is “atmospheric water vapor”, be sure to read this post because experimental evidence suggests that this explanation is wrong.

Freezing soap bubbles

Want to try an easy, yet interesting chemistry experiment this winter?  Try this:  Blow some bubbles into the outside winter air and catch one of the bubbles with a bubble wand.