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.
For a more advanced list of resources on atoms, elements and compounds. Elements are substances that cannot be separated into simpler substances. Salt is made up of the elements sodium and chloride. Water is made up of the elements hydrogen and oxygen.
Molecules. A molecule is two or more atoms bonded together chemically. An atom is the most basic unit of matter. When atoms are chemically bonded together with covalent bonds, molecules are formed. Molecules can be very small like water molecules or extremely large like proteins such as hemoglobin. Upon examination of a chemical formula for a molecule we see the element symbols marked with a subscripted number. The number represents the amount of that atom present within the molecule. If we are looking at water which has a chemical formula of H 2 O, this refers to 2 atoms of hydrogen bonded to one atom of oxygen.