How does a joint formed by chemical adhesion differ from others?

A joint formed by chemical adhesion differs from others primarily because it involves a change in the atomic arrangement of the materials being joined. Chemical adhesion occurs when atoms from different materials bond at a molecular level, leading to the formation of new compounds or structures. This bonding alters the arrangement of atoms, creating a much stronger joint due to the formation of chemical bonds, such as covalent or ionic bonds, rather than relying solely on physical forces.

In contrast, other types of joints, such as mechanical joints, typically rely on mechanical forces and do not alter the atomic structure of the materials involved. The strength of a chemically adhered joint is a direct result of this atomic-level interaction, making it distinct in terms of durability and resistance to separation compared to purely mechanical methods that may not involve such significant changes at the atomic level.