Environmental Chemistry
Environmental chemistry.com: Periodic Table Oxygen
An incredibly thorough site with a wealth of basic information on oxygen. Highly recommended.
Florida-Spectrum Environmental Services
Florida Spectrum: Chemical Fact Sheet: Oxygen
Very thorough summary of detailed information on oxygen, its history, isotopes, properties, and applications.
Encyclopedia of Earth
Encyclopedia of Earth: Oxygen
Information about the element, Oxygen, atomic number 8. Covers history, physical and atomic properties, abundance, and permissible exposure limits. Also discusses forms of oxygen, isotopes, sources, and uses.
Other
Web ref.org: Oxygen
Nice entry on oxygen, its properties, and uses including good links to all the terminology in the entry.
Web Elements
Web Elements Periodic Table: Oxygen
Very nice site with a great deal of excellent and helpful information on oxygen.
TED Talks
Ted: Ted Ed: Oxygen: Periodic Table of Videos
The team at Periodicvideos has created a TED-Ed Lesson for every element of the periodic table. This one is about oxygen- it's number 8 and is among the most "famous" of the elements.
Open Curriculum
Open Curriculum: Properties of Oxygen
This article aims to show a variety of properties related to the element oxygen.
Chemicool
Chemicool: Oxygen
A set of tables summarizing all sorts of chemical and physical data on oxygen at this site from Chemicool.
Chem4kids
Chem4 Kids: Oxygen (O)
Here you can find some great information about the 8th element in the periodic table, "oxygen." Content focuses on oxygen's electrons, where you can find oxygen in nature and in the home, and how oxygen combines with other elements.
University Corporation for Atmospheric Research
Ucar: Oxygen
Article provides an overview of the chemical element, Oxygen.
Ducksters
Ducksters: Chemistry for Kids: Elements: Oxygen
Kids learn about the element oxygen and its chemistry including atomic weight, atom, uses, sources, name, and discovery. Plus properties and characteristics of oxygen.
Science4Fun
Science4 Fun: Oxygen
Fun and interesting information about Oxygen, the most abundant element in the human body. Learn about its characteristics, uses, where it is found, and discovery.
Mocomi & Anibrain Digital Technologies
Mocomi: The Discovery of Oxygen
Brief discussion on the discovery of oxygen and how it got its name.
Other
Reynolds Office of Health and Nutrition: Oxygen
This site contains an essay that discusses the significance of oxygen and why it is vital to humans.