Hydrogen is about 14 times lighter than air, according to ' The Principles of Chemistry.'.Liquefied hydrogen is extremely cold and it can cause severe frostbite when it comes into contact with skin.

NASA uses hydrogen as rocket fuel to deliver crew to space.Its use in filling airships ended when the Hindenburg caught on fire, according to the Royal Society. The first gas balloon flight was launched in Paris in 1783 and the gas used in the balloon was hydrogen, according to the National Balloon Museum.Hydrogen is the main component of Jupiter and the other gas giant planets, according to Los Alamos.Credit: NASA/JPL/University of Arizona Who knew? The resolution is about 89 miles (144 kilometers) per pixel. This true-color simulated view of Jupiter is composed of 4 images taken by NASA's Cassini spacecraft on December 7, 2000. (Image credit: NASA/JPL/University of Arizona) Hydrogen is also used in the glass industry as a protective atmosphere for making flat glass sheets, while the electronics industry, it is used as a flushing gas in the process of manufacturing silicon chips, according to the Royal Society.

Researchers have been working on developing the hydrogen fuel cell technology that allows significant amounts of electrical power to be obtained using hydrogen gas as a pollution-free source of energy that can be used as fuel for cars and other vehicles. Other examples of hydrogen use include rocket fuel, welding, producing hydrochloric acid, reducing metallic ores and filling balloons, according to Los Alamos. The element is also added to fats and oils, such as peanut oil, through a process called hydrogenation, according to Jefferson Lab. Hydrogen is used to make ammonia for fertilizer, in a process called the Haber process, in which it is reacted with nitrogen. Hydrogen is typically produced by heating natural gas with steam to form a mixture of hydrogen and carbon monoxide called syngas, which is then separated to produce hydrogen, according to the Royal Society. Hydrogen combines with other elements, forming a number of compounds, including common ones such as water (H 2O), ammonia (NH 3), methane (CH 4), table sugar (C 12H 22O 11), hydrogen peroxide (H 2O 2) and hydrochloric acid (HCl), according to Jefferson Lab.

Hydrogen atom