In Chemistry, What Is an Addition Reaction?

Addition reaction is a characteristic reaction of unsaturated compounds.

An addition reaction is an organic chemical reaction that occurs when there is

Definition of substitution reaction: A reaction in which one atom or group of atoms in an organic molecule is replaced by another atom or group of atoms.

Type comparison: Many reference books often compare it with displacement reactions, and I think it is more like metathesis reactions.

Example: Take the reaction between CH ₄ and Cl ₂ as an example. The principle is that one H is replaced by one Cl, that is, the CH bond becomes a CCl bond. The remaining Cl produces HCI with the substituted H. The characteristic is that one H is replaced, one Cl _{2 is} consumed, and one HCl is produced.

Addition reaction definition: The reaction in which unsaturated carbon atoms in organic molecules directly combine with other atoms or atomic groups to form new substances.

Comparison of types: From the point of view of material types, it is similar to the chemical reaction.

Example: Take the reaction between CH ₂ = CH ₂ and Br ₂ as an example. The principle is that one of the double bonds in C = C is broken, and two Cs each form a half bond, which are respectively combined with two Br. The characteristic is that double bonds become single bonds, and unsaturated becomes saturated.