has quality has quality has role has input has input has output has output material entity material entity fuel smoke combustion process Combustion or burning is a high-temperature exothermic redox chemical reaction between a fuel and an oxidant that produces oxidized, often gaseous products, in a mixture termed as smoke. Unlike the "combustion" class in the Chemical Methods Ontology, this class is not necessarily a planned process. http://purl.obolibrary.org/obo/CHMO_0001473 This class may be surrendered to REX. thermolysis aerosol formation process combustibility