how can you tell if a mixture is a liquid solution?

Answer 1

If it takes the shape of a container.....Once you can mix it, it is a solution...you don't have solid and gaseous solutions..... I think what you're asking is how do you know if a mixture is a solution (rather than suspension or colloid) ....
If so then, you know a mixture is a solution if all the particles are dissolved in the mixture...(if not: suspension) or is not milky in appearance (colloid).
eg. Salt and water is a solution since the salt dissolves as opposed to sand and water (suspension)

Answer 2

Well when you can pour it and it goes into another container. But your have to properly mix the mixtures together to get a liquid. And well it feels like water or liquidy, you know waterish.