Types of chemical reactions

A combustion reaction is a chemical reaction that occurs when a substance combines with oxygen, releasing energy in the form of light and heat. Example: $$C_{11}H_{24} + 17O_2 -> 11CO_2 + 12H_2O$$ .

A double replacement reaction is a type of chemical reaction where two compounds exchange ions or bonds to form two new compounds. Example: $$Na_2S + 2HCl -> H_2S + 2NaCl$$ .

A decomposition reaction is a chemical reaction where a single compound breaks down into two or more simpler products. Example: $$2NaHCO_3 -> Na_2CO_3 + CO_2 + H_2O$$ .

A single replacement reaction is a chemical reaction where one element replaces another element in a compound. Example: $$Zn + 2HCl -> ZnCl_2 + H_2$$ .

The general form of a decomposition reaction is: compound -> element + element.

A synthesis reaction is a type of chemical reaction where two or more simple substances combine to form a more complex product. Example: $$A + B -> AB$$ .

A synthesis reaction combines substances to form a compound, while a decomposition reaction breaks down a compound into simpler substances.

Oxygen acts as a reactant in combustion reactions, allowing the substance to oxidize and release energy.

The products of a complete combustion reaction are typically carbon dioxide (CO2) and water (H2O).

An example of a synthesis reaction is: $$2H_2 + O_2 -> 2H_2O$$ .