I made ScienceFix.com to share my favorite demos that I do in my middle school science classes.  

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« Does Mass Affect the Sinking/Floating of Objects? | Main | Soda Can Density Discrepancy »

Sinking and Floating Bubbles

For this demonstration I use my own special formula for extra strong soap bubbles. I use one part Dawn soap, one part glycerin, and two parts water. I dip the bottom end of the funnel into the soap bubble mixture and blow through the wide top to create large bubbles. The rest of the demo just needs an empty fish tank and some dry ice. This is one of my favorite demos to teach the concepts of the density and buoyancy of different gasses. 

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Reader Comments (2)

Really entertaining video :)

April 30, 2012 | Unregistered Commenteržogs

Hats off to you!! It takes alot of time to prepare for science experiements, but the students learn so much more when they get the hands on experience.

July 16, 2012 | Unregistered CommenterRenae

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