Kaplan Nursing Entrance Exam Practice 2026 – Comprehensive Prep

The chemical equation AB --> A + B illustrates a decomposition reaction, where a single compound (AB) breaks down into two or more simpler substances (A and B). This process typically involves the breaking of chemical bonds in the compound, resulting in the formation of individual elements or simpler compounds.

Decomposition reactions often occur under specific conditions, such as the application of heat, light, or electricity. For example, the decomposition of water into hydrogen and oxygen gases is a well-known reaction that can be induced by electrolysis. The key characteristic of a decomposition reaction is that a larger, more complex molecule is transformed into smaller, more stable products.

In this instance, the presence of a single reactant leading to multiple products is the definitive aspect that categorizes this reaction type as decomposition. Understanding this type of reaction is fundamental in the study of chemical processes, as it lays the groundwork for more complex reactions and interactions between different substances.