In the dolphin written-response scenario for Formulations, explain how pure substance chromatography supports this objective: Distinguish a formulation from a pure substance and from an unplanned mixture..

A high-scoring answer should explain distinguish a formulation from a pure substance and from an unplanned mixture. Use evidence before identification: name the relevant test or measurement, state the observation, and then connect the result to Formulations.

The important distinction is that formulation must be identified from designed mixture composition; answers that swap in a different test or result do not match Formulations. A complete answer should use the approved objective wording, include the relevant evidence, and avoid unsupported identification claims.