Hooked on Science: Spooky fog

Did you know you can use science to create the spookiest Halloween ever at your house?

Materials

* Dry ice

* Warm water

* Bowl

* Gloves

Instructions

STEP 1: Fill the bowl halfway with warm water.

STEP 2: Put the gloves on and place a piece of the dry ice into the water and observe.

Explanation

When you placed the dry ice into the warm water a cloud formed above the bowl. Dry ice is frozen carbon dioxide and is minus 109.3 degrees. As dry ice breaks down it turns directly into carbon dioxide gas. In science this process is called sublimation. You can discover more hands-on experiments by going to www.hookedonscience.org.

Jason Lindsey is a Science Outreach Educator with Hooked on Science. Check out his website "Hooked On Science" at hookedonscience.org for webcasts and experiments that might get you hooked on science. Send him your science questions at jlindsey@hookedonscience.org. More science experiments can be found at www.semissourian.com.