Question

select the correct answer. to determine whether a chemical reaction has taken place, a scientist can observe the properties of substances before and after a change. which property is unique for each substance in its purest form? a. solubility b. color c. temperature d. density e. state

Explanation:

Each substance has a unique solubility in its pure - form. Solubility is a characteristic physical property that can change during a chemical reaction. Color, temperature, density, and state can also change, but solubility is more specific to the identity of the pure substance and can be a key indicator in determining if a chemical reaction has occurred as it reflects the interaction of the substance with a solvent at a fundamental level.

Answer:

A. solubility