Carbon dioxide
Videos
Carbon dioxide is a chemical compound with the chemical formula CO2. It is made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms. It is found in a gas state
Pellets of "dry ice", a common form of solid carbon dioxide
Rising levels of CO2 threatened the Apollo 13 astronauts, who had to adapt cartridges from the command module to supply the carbon dioxide scrubber in the Apollo Lunar Module, which they used as a lifeboat.
A carbon dioxide sensor that measures CO2 concentration using a nondispersive infrared sensor
Pterapod shell dissolved in seawater adjusted to an ocean chemistry projected for the year 2100
Carbon
Videos
Carbon is a chemical element; it has symbol C and atomic number 6. It is nonmetallic and tetravalent—meaning that its atoms are able to form up to four covalent bonds due to its valence shell exhibiti
Carbon dioxide
…Carbon dioxide is a chemical compound with the chemical formula CO2. It is made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms. It is found in a gas state at room temperature and at normally-encountered concentrations it is…
Graphite (left) and diamond (right), two allotropes of carbon
Comet C/2014 Q2 (Lovejoy) surrounded by glowing carbon vapor
A large sample of glassy carbon
Graphite ore, shown with a penny for scale