Respuesta :
The property of the unknown substance was the chemist most likely investigating is SOLUBILITY. Hope this helps
Answer:
Solubility.
Explanation:
When a chemist is dissolving crystal of unknown substance it means the chemist is checking the solubility of substance in the water.
As the chemist not measuring the temperature so he is not determining anything related to enthalpy, boiling point, melting point etc.
When we dissolve a particular amount of substance (to form saturated solution) in a particular volume of solvent it means we are checking it solubility.