chem defs
| Front | Sublevel |
| Back | a subdivision of a main energy level // consists of one or more orbitals of the same energy |
| Front | immiscible |
| Back | two liquids that do not mix , e.g. oil and water |
| Front | valency |
| Back | the number of atoms of hydrogen, or any other monovalent element, with which each atom of the element combines |