Question

How can we say that a mixture contains more than one substance?

Answer 1

A mixture is a material system made up of two or more different substances which are mixed but not combined chemically. A mixture refers to the physical combination of two or more on which the identities are retained and are mixed in the form of solutions, suspensions and colloids.

We can say that a mixture contains more than one substance by looking into the solution. There may be some difference in size or colour etc.