Answer: Option (A) is the correct answer.
Explanation:
A mixture is defined as the substance that contains two or more different number of substances which are physically mixed together.
For example, a mixture of mud and water can be separated through the process of filtration.
A pure substance is defined as the substance which contains either same or different type of atoms that are chemically combined to each other in a fixed ratio by mass.
For example, both [tex]Cl_{2}[/tex] and [tex]MgSO_{4}[/tex] are pure substances.
A pure substance can only be separated by chemical means.
Thus, we can conclude that one difference between mixtures and pure substances is that mixtures can be physically separated.
