which clue can be used to identify a chemical reaction as a combustion reaction? oxygen is a product. a…

which clue can be used to identify a chemical reaction as a combustion reaction? oxygen is a product. a hydrocarbon reacts with oxygen. water and carbon dioxide react. the reaction involves ions.
Answer
Brief Explanations:
Combustion is a reaction of a hydrocarbon with oxygen.
Answer:
A. A hydrocarbon reacts with oxygen.