The term 'remove chemically' can be summarized by the crossword solution 'elute, ' which is a five-letter word. Elution is a process used in chromatography to separate molecules based on their chemical properties. It involves passing a solvent, or mobile phase, through a stationary phase, such as a column of adsorbent material. The molecules of interest are then removed from the stationary phase and carried away by the solvent.