Final answer:
The elements necessary for a fire are heat, fuel, and oxygen. The combustion process involves combining oxygen with carbon and hydrogen atoms in the fuel to release energy. Various sources can provide oxygen for combustion reactions.
Explanation:
The three elements required for a fire to occur are heat, fuel, and oxygen. Heat is needed to ignite and maintain the fire, fuel is the combustible material, and oxygen supports the chemical processes during combustion.
When a fire is burning, the reaction involves combining oxygen with hydrogen and carbon atoms in the fuel to release energy as heat and light. The products of combustion are carbon dioxide (CO2) and water (H2O).
In the context of combustion, oxygen is a crucial reactant, and it can come from sources like the air, hydrogen peroxide, nitrous oxide, or nitrates. Compounds containing elements like nitrogen bonded to oxygen can also act as oxidizers.
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