Take the local train, Circumvesuviana, from the Sorrento Central train station to the Naples Central Railway Station. Sorrento is the last and first stop on its trip around the Gulf of Naples, so you don't have to worry about getting on a train in the wrong direction. Train fare costs about $5.50.
How elements are formed. Our world is made of elements and combinations of elements called compounds. An element is a pure substance made of atoms that are all of the same type. At present, 116 elements are known, and only about 90 of these occur naturally.
As atoms, carbon, oxygen and nitrogen are formed from hydrogen and helium via nuclear fusion inside stars. Hydrogen itself is formed from further subatomic particles. As â¦ elements, each are formed when atoms of that element collide and form covalent bonds (apart from carbon, which requires large amounts of pressure and heat).