How can you make a solution saturated

Ways to make a saturated solution include: Add solute to liquid until dissolving stops. Evaporate a solvent from a solution until the solute begins to crystallize or precipitate.

Ch4 and ph3 are both covalent since they are composed both of non-metals.    ch4 is non- polar because of  london forces and has a geometry of tetrahedral  ph3 , on the other hand, is umbrella shaped polar and has dipole-dipole intermolecular force (imf) . since ph3 is polar, it has a stronger imf