Comment, Like, & Favorite
Dr Tim Evans
Photograph - Photograph
Oxygen molecule. Computer model of a molecule of oxygen (O2). The two atoms are joined by a double bond. Oxygen is a colourless gas at room temperature. It makes up one fifth of the Earth's atmosphere. Oxygen is extremely reactive, forming oxides of most elements. It has an important role in animal and plant respiration and combustion.
May 6th, 2013
Viewed 3 Times - Last Visitor from Beverly Hills, CA on 04/18/2014 at 8:29 AM
copy and paste to your website / blog - preview