A substance that dissolves is usually called a solute
A solution is formed when a solute dissolves in a solvent
Filtration is a method to separate a solid and a liquid. The solid is collected on a filter paper, while the liquid passes through it and is collected in a separate container.
Crystallisation is performed by heating a mixture so that the solvent evaporates. Eventually, crystals of the solute will form.
A compound contains two or more chemically combined elements
Chromatography method:
Draw a pencil line near bottom of paper
Place a sample of each ink on solvent line
Pour shallow layer of solvent into beaker
Place chromatography paper into beaker and place a lid
Wait for the solvent to rise and remove paper when solvent is almost at the top