adsorbate

Adjective modifier

• other: The dissociated molecules can undergo thermal reactions with neighboring surface atoms or with other adsorbates.

Modifies a noun

• layer: The crystal ( with or without an adsorbate layer ) is divided into layers parallel to the surface.
• molecule: The binding energy of a second layer of adsorbate molecules is similar to the latent heat of sublimation or vaporization of the adsorbate.