{"knowledge_schema": {"broad_category": "Chemistry \u2192 Organic Chemistry \u2192 Compound Interactions", "refinement": "This situation involves the behavior of chemical compounds during synthesis or analysis, particularly in terms of their physical properties and interactions.", "specific_scope": "The chemist's statement suggests a problem related to the physical arrangement or interaction of compounds, likely during a separation or purification process.", "goal": "Identify the nature of the issue the chemist is facing with their compounds."}, "summary": "In this scenario, the second chemist is likely referring to a situation where their compounds are not separating properly, which can happen when compounds have similar physical properties. The phrase 'on top of each other' suggests that the compounds are interacting in a way that makes them difficult to distinguish or separate, which is most commonly associated with non-covalent or van der Waals interactions. Therefore, the most likely answer is that the compounds they are working with are bonding to each other through non-covalent/van der Waals interactions."}