if you had to pick one which one could cool down more quickly in obsidian rock or a porphyry how do you know if for how each rock formed​ quick

The atomic nucleus made up from protons (yellow) and neutrons (blue) and held together by nuclear forces. nuclear forces (also known as nuclear interactions or strong forces) are the forces that act between two or more nucleons. they bind protons and neutrons (“nucleons”) into atomic

In any atom of any element, you will find protons and neutrons in the nucleus of any atom 

Answer heart of american                  live in harmony                    hillsides of orchards                    blaze of color                    backdrop of pines;