We can see that points A, B, C and D are all still coplanar points. Point E is not coplanar with the original four points. But if I pick any group of three of the points, even a group containing point E, those three points will be coplanar. The reason is the statement given above - any three points in 3-dimensional space determine a plane.
Definition of solubility. 1  1 : the quality or state of being soluble. 2  2 : the amount of a substance that will dissolve in a given amount of another substance.
Another factor important in solubility is temperature. The amount of solute that a given solvent can dissolve normally increases as a function of temperature, although there are always a few exceptions. The third factor that comes into play in solubility is polarity. In introductory chemistry courses we learn about the â like dissolves like â principle.