Based upon reader comments on previously published, Chemical Mystery #12, I experimented and found that this demonstration is easy to pull off with relatively inexpensive and easy to find materials.
Check out the solution to Chemical Mystery #12: Baffling Balloons
Can you explain what is happening in Chemical Mystery #12?
I’ve always been fascinated by advanced polymeric materials; it’s amazing how materials that are generally considered “plastics” have such stunning properties. I recently watched a couple of movies about Batman and it came out that some of his devices and protections are made of advanced polymers. In particular, the suit is almost entirely made of Kevlar.
Students broke up into teams with the question, "Do bowling balls sink or float in water?".
For this coming school year, I would like to kick off every unit with a discrepant event, and then bring it back at the end of the unit for students to explain with their new model.
I spent the week learning about the field of chemistry education, being in awe of Notre Dame’s campus and most importantly, geeking out with some of the most amazing chemistry teachers you will ever meet.
Since the birth of YouTube in 2005, many teachers have taken advantage of their ability to support student learning outside of the classroom in ways that were not possible in the past.