Chemistry Experiments

The Boiling Point experiment exemplifies a best use of the Web.

Other projects have attempted similar tasks; for instance, one experiment asks students around the world to measure carbon dioxide in the air.

Since most worldwide connected schools are in urban areas, it turns out that the amount of carbon dioxide does not vary much.

Major cities, however, are located at different elevations so The Boiling Point experiment works.

What other chemistry experiments would provide a similar learning experience?.