Put it in water.
Wait.
Check the water for traces of the solid material.
No, ice isn't a solid dissolved in another solid.Once ice is dissolved it becomes water and water is a liquid.
it has to do with how many dissolved solids are in water
salt
In the water
This solid is called a solute.
solute
Chalk
its aqueous when dissolved in water and solid (@STP) when not
Perform crystallisation.
alot
salt
solid liquid liquid solution