23:47
The periodic table
Much more than a list of elements, the periodic table is a snapshot of how matter is organized on Earth and throughout the universe. Divided into five sections, this program looks at the history and components of the periodic table: The History of t...
55:24
The noble gases
The noble gases, like the noble metals, are characterized by low reactivity. Segments in this program include Exploring the Noble Gases (properties of the noble gases); Helium: Rocket Fuel (helium's part in powering the space shuttle); Neon: Fabulou...