When the air surrounding carbon is restricted during combustion, carbon monoxide is formed. When carbon reacts with water under pressure, water gas is formed. Water gas is a mixture of carbon monoxide, carbon dioxide, nitrogen and other elements. Carbon reacts with halogen at high temperatures. read more
Carbon, either as graphite or diamond does not react with water under normal conditions. Under more forsing conditions, the reaction becomes important. In industry, water is blown through hot coke. read more
When carbon reacts with water under pressure, water gas is formed. Water gas is a mixture of carbon monoxide, carbon dioxide, nitrogen and other elements. Carbon reacts with halogen at high temperatures. Together, the two form carbon tetrafluoride. Graphite, a form of carbon, also reacts with certain acids, such as nitric acid, to form mellitic acid. read more
Carbon also occurs in the form of carbon dioxide (CO 2 ) in the atmosphere. Carbon dioxide makes up only a small part of the atmosphere (about 300 parts per million), but it is a crucial gas. Plants use carbon dioxide in the atmosphere in the process of photosynthesis. read more