Exploratorium
Bubble Suspension
Create a cushion of carbon dioxide gas to float some soap bubbles on. Many concepts can be demonstrated through this activity:
Carbon dioxide gas is more dense than air
Bubbles are semipermeable, allowing only carbon dioxide to diffuse...
DiscoverE
Ocean Acidification
Combat ocean acidification with bubbles. Young engineers create a system that reduces the acidity of water. Dry ice in water helps simulate ocean acidity, and blowing bubbles into the water results in a gas exchange that neutralizes the...
University of Maryland
Univ. Of Maryland: Sublimation of Dry Ice Projection
A short page from the University of Maryland Physics Lecture Demonstration Facility. Provides directions for a teacher demonstration on sublimation. Shows apparatus and set-up; provides suggestions. Easily adaptable as a student project...
Other
Elmhurst College: Virtual Chembook: What Are Physical Properties and Changes?
Brief descriptions of physical properties, physical changes, and the process of sublimation. The three states of matter, melting point, and boiling point are described. There is one link on the page, which leads to an explanation of...