Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
7.7
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
4280
Points per Word
0.000234
Page Count
32
Points per Page
0.03125
Description
Explores the history of the chemical element oxygen and explains its chemistry, how it works in the body, and its importance in our lives.