1 String str = Java String to String Array Example; /*. * 2  To convert String object to String array, first thing. * 3  we need to consider is to how we want to create array. *. * 4  In this example, array will be created by words contained. *  in the original String object.
A molecule is a group of two or more atoms bonded together, while a compound is a group of two or more atoms bonded together where the atoms are from at least two types of elements. All compounds are also molecules, but all molecules are not compounds.
1 Atom is a smallest particle of an element. 2  Molecule is a group of two or more atoms combined together so it is bigger. 3  Atom consists of nucleus (containing protons and neutrons) and electrons. 4  Molecule consists of combination of two or more like or different atoms chemically bound together e.g.