Answer :
As a chemist, the classification of substances as elements, mixtures, or compounds is of more importance than the state of the substances.
Classification of substances
The state of substances is mostly obvious to the eyes, even to those that are not chemists. In other words, the state of matter of substances is just a physical property that can be easily discerned.
Whether a substance is an element, mixture, or compound, however, is something that may not be discerned physically without carrying out some chemical analyses.
Thus, a chemist would be more interested in the classification of substances as elements, compounds, or mixtures.
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