1. the most abundant element in the universe.
2. extremely flammable but you need oxygen for it to explode (YouTube of Nottingham’s Video).
3. a diatomic gas at room temperature and pressure – H2 (diatomic – two atoms joined together by bonds, one bond in the case of H2)
4. the main component of the gas giant planet Jupiter – metallic hydrogen liquid forms the core of the planet, a form of hydrogen that can only exist under extreme pressure.
5. the gas used in the Hindenburg blimp. The one that exploded (although theories as to why it exploded vary).
6. the basic building block for all the other elements in the periodic table, forming them in nuclear fusion in the heart of stars (and those elements going on to form other elements and so on)
7. widely believed to be the fuel of the future (‘the hydrogen economy’), but problems exist in creating fuel cells and methods of obtaining and storing hydrogen that don’t cost the earth.
8. responsible for a lot of acid-base behavior in chemistry.
9. used in the Haber industrial process to fix nitrogen, forming ammonia – an important chemical feedstock
10. abundant in organic molecules, and has a special sort of bonding associated with it – hydrogen bonding. Hydrogen bonding is responsible for water (2 parts hydrogen, one part oxygen, H2O) being liquid at room temperature, and many of the other properties of water.