Question

What Is Combustion?? Pls Fasttttt

Answer 1

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• Combustion can be defined as a chemical process in which a substance will react to oxygen to release heat and light.

Step-by-step explanation:

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Some Terms related to this chapter and its definition

• Acid Rain :- When the oxides of Sulphur and nitrogen mixed with water vapour in atmosphere it forms acids.The rain thus formed is called acid rain.

• Ignition Temperature:- The lowest Temperature at which a substance starts burning is called Ignition Temperature.

Answer 2

Combustion, or burning,[1] is a high-temperature exothermic redox chemical reaction between a fuel (the reductant) and an oxidant, usually atmospheric oxygen, that produces oxidized, often gaseous products, in a mixture termed as smoke. Combustion does not always result in fire, because a flame is only visible when substances undergoing combustion vapourise, but when it does, a flame is a characteristic indicator of the reaction. While the activation energy must be overcome to initiate combustion (e.g., using a lit match to light a fire), the heat from a flame may provide enough energy to make the reaction self-sustaining. Combustion is often a complicated sequence of elementary radical reactions. Solid fuels, such as wood and coal, first undergo endothermic pyrolysis to produce gaseous fuels whose combustion then supplies the heat required to produce more of them. Combustion is often hot enough that incandescent light in the form of either glowing or a flame is produced. A simple example can be seen in the combustion of hydrogen and oxygen into water vapor, a reaction commonly used to fuel rocket engines. This reaction releases 242 kJ/mol of heat and reduces the enthalpy accordingly (at constant temperature and pressure):