what is the difference between carbon monoxide and carbon dioxide?
What are the key differences between carbon monoxide and carbon dioxide? Both of these gases have a lot of similarities â both CO2 and CO are odourless and tasteless. The critical chemical difference is that CO2 contains one molecule of carbon and two molecules of oxygen, whilst CO has one carbon and one oxygen molecule. Carbon dioxide is non-flammable, whilst carbon monoxide is not â we certainly wouldnât encourage you to light a match in order to determine which gas is which.