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Activation energy
Activation energy ($E_a$) is the minimum energy required for colliding particles to form an activated complex (also known as the transition state) and proceed to products.
Combustion
Combustion is a chemical process where a substance, known as the fuel, reacts with oxygen (O₂), releasing energy in the form of heat and light.
Complete combustion
Complete combustion occurs with excess oxygen, producing carbon dioxide (CO₂) and water (H₂O).
Incomplete combustion
Incomplete combustion happens with limited oxygen, resulting in byproducts like carbon monoxide (CO) and soot (C).
Redox reaction
A redox reaction is a chemical reaction in which electrons are transferred from one species to another. Oxidation and reduction always occur simultaneously.