Presents an introduction to silicon, in simple text with illustrations, including information on what it is made of, how it is used, and where it is found.
Presents an introduction to mercury, in simple text with illustrations, providing information on what it is, how it is useful, and how it can be a poison.
Presents an introduction to lead, in simple text with illustrations, providing information on what it is, how it is useful, and how it can be a poison.
Presents an introduction to chlorine, in simple text with illustrations, including information on what it is made of, how it is used, and how it affects the environment.