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Across 2. adsorption is a bulk/surface phenomenon 4. The accumulation of molecular species at the surface rather than in the bulk of a solid or liquid 5. the material on the surface of which the adsorption takes place 8. the substance is uniformly distributed throughout the bulk of the solid in which phenomenon 10. term used to describe both absorption and adsorption 11. absorption is a bulk/surface phenomenon 12. The process of removing an adsorbed substance from a surface on which it is adsorbed 13. sorption whose rate is high in beginning and decreases till equilibrium is attained

Down 1. in this phenomenon concentration is same throughout the surface 3. chemisorption and physiosorption are types of 6. molecular species or substance, which concentrates or accumulates at the surface 7. sorption whose rate remains same throughout the process 9. adsorption of gases on the surface of metals