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 * Element Name:** Hydrogen


 * Element Symbol:** H[[image:hydrogen.png width="216" height="288" align="right"]]


 * Atomic Mass:** 1


 * Atomic Number:** 1


 * Protons:** 1


 * Electrons:** 1


 * Discovery:** Discovered by Henry Cavendish at 1766 in London, England


 * How it was named:** From the Greek words "hydro" and "genes" meaning "water" and "generator"


 * State of Matter:** Gas at room temperature


 * Melting Point:** -259.14° C


 * Boiling Point:** -252.87° C


 * Characteristics:** Very light, most abundant, colorless, explosive mixtures


 * Uses:** Rocket fuel, welding, filling balloons, hydrogenation of fats and oils


 * Interesting Facts:** It is the lightest and most abundant chemical element. Its crystal structure is a hexagon. Pure oxygen and hydrogen burned creates ultraviolet light and is nearly invisible to the naked eye. The sun and stars burn hydrogen to get their energy and light. The sun's supply of hydrogen is expected to last 5 billion years.

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