The Carbon Dioxide Spiral Staircase

The demonstration where CO2 is generated and used to snuff out a candle in an aquarium or other container is well known. This article describes a dramatic variation on these demonstrations that allows for discussion of such topics as the ideal gas law, densities of different gases, gas density changes with temperature, miscibility, and viscosity. The device described is easily and inexpensively produced and stored. The demonstration is large scale and works well for classrooms and community outreach events. 

JCE 98.03 March 2021 Issue Highlights

The March 2021 issue of the Journal of Chemical Education is now available online to subscribers. Topics featured in this issue include: lunar exploration and the chemistry classroom; teaching and learning remotely; experiments with color and natural products; materials science; introductory computational chemistry; guided inquiry activities; demonstrations and apparatus; teaching organic chemistry; biochemistry; chemical education research: introductory chemistry; from the archives: choose your own adventure and chemical escape rooms.