Hydrogen (H) Hydrogen is the lightest elements of all that are on the periodic table. Hydrogen makes up 90 percent of our universe. Most of that is because it is so flammable that it burns brightly in the stars, comets, meteors, and of flaming space stuff. Its atomic number is one so it only has one electron and one proton but no neutron. The atomic mass is 1.00794. the CAS registry ID is 1333-74-0 (I have …showed first 75 words of 478 total…

…showed last 75 words of 478 total… all and to top it off a giant fireball goes out and burns everything. Oh, and then there is the fallout. Radiation everywhere and death. Big stuff. Obviously Hydrogen can cause a lot of destruction and death from the big bomb and blowing up blimps. It is still a hug part of our lives because there are so many compounds use it. One big one is water and where would we be without it.