Question

Why salt is a pure substance and salt solution is considered to be a mixture?​

Answer 1

Answer:

Salt is a pure substance as it is a single element.

But salt solution contains water including hydrogen and oxygen hence making it an mixture.

Explanation:

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Answer 2

Answer:

Salt water is a mixture and not a pure substance. We define pure substances as those that contain atoms or molecules of the same type. ... Thus, salt water is a mixture, with salt as the solute and water as the solvent. In fact, salt water is a homogeneous mixture and can be termed as a solution.