Question

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Which clue can be used to identify a chemical reaction as a co
Oxygen is a product.
A hydrocarbon reacts with oxygen.
Water and carbon dioxide react.
The reaction involves ions.

Answer 1

Answer: The clue that can be used to identify a chemical reaction as a combustion reaction from the options would be if a hydrocarbon reacts with oxygen. Basically, a combustion reaction is a kind of reaction involving oxygen and another reactant with energy being released in the process.