Explore how molecules of three different materials change states at different temperatures.
Illustrates two states of matter (liquid and solid) by using the example of glass that has been heated and then cooled.
Shows how liquid nitrogen can be used to solidify mercury in molds.
Reviews the distinctions between the three states of matter.
Explore how supercritical carbon dioxide is used to extract caffeine from coffee and tea.
Discover the properties of ether, and the uses of ether and nitrous oxide as anesthetics.