Chromatography is a separations technique that relies on difference in the ability of different substances to adhere to a surface. a. True b. False I'm not sure about this one because, in my notes, the only thing missing from this sentence is "different". My notes state the following: "This technique separates substances on the basis of differences in the ability of substances to adhere to the solid surface". Notice there is no "of different substances" in the notes. Am I overthinking this? I put false.