What is the name for a reaction in which electrons are transferred from one atom to another?

A combustion reaction involves the reaction of a substance with oxygen, typically producing heat and light. While electrons may be involved in the process, the defining characteristic of combustion is not the transfer of electrons between atoms but rather the rapid oxidation of fuels, resulting in products such as carbon dioxide and water.

A synthesis reaction occurs when two or more reactants combine to form a single product. This type of reaction does not specifically involve the transfer of electrons; rather, it focuses on the formation of new chemical bonds. Thus, it does not meet the criteria for a reaction defined by electron transfer.

A double-displacement reaction entails the exchange of ions between two compounds, resulting in the formation of new compounds. While ions may rearrange, this reaction does not involve the direct transfer of electrons between atoms, which is essential for defining a redox reaction.