Chemisorption
![Hydrogenation of an alkene on a solid catalyst entails chemisorption of the molecules of hydrogen and alkene, which form bonds to the surface atoms.](/Images/godic/202501/04/Hydrogenation_on_catalyst4201.png")
Chemisorption is a kind of adsorption which involves a chemical reaction between the surface and the adsorbate. New chemical bonds are generated at the adsorbant surface. Examples include macroscopic phenomena that can be very obvious, like corrosion, and subtler effects associated with heterogeneous catalysis. The strong interaction between the adsorbate and the substrate surface creates new types of electronic bonds.