Which type of reaction do compounds with carbon-carbon double bonds participate in?

Compounds that contain carbon-carbon double bonds, also known as alkenes, primarily engage in addition reactions. This is due to the presence of the double bond, which is a region of high electron density and is reactive. During an addition reaction, other atoms or groups can add across the double bond, converting it into a single bond and resulting in the formation of new compounds.

For instance, in a typical addition reaction, a molecule like hydrogen, halogens, or water can react with an alkene. The double bond splits, and the new atoms attach to the carbon atoms that were originally part of the double bond, resulting in a saturated compound. This is a fundamental property of alkenes and is key to many organic synthesis processes.

The other types of reactions are less pertinent to compounds with carbon-carbon double bonds. Decomposition reactions involve breaking down a single compound into simpler products and do not apply here. Substitution reactions typically occur in saturated compounds where one atom is replaced by another, not suitable for the mechanism of addition in alkenes. Rearrangement reactions involve the reorganization of a molecule's atoms without adding or removing substances, which again isn’t specific to the behavior seen in compounds with double bonds.

Thus, addition reactions