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More About Hydrogen
What the name means: The name Hydrogen comes from the Greek words hydro, meaning water, and genes, meaning making.
Who identified hydrogen?: The first person to write about making hydrogen gas was a 16th century alchemist named Theophrastus von Honhemheim, better known as Paracelsus. A century later, in 1671, another alchemist, Robert Boyle, also described hydrogen gas as a colourless gas given off when he added acid to iron filings. In 1766 a scientist called Henry Cavendish collected this colourless gas and burnt it. He observed that water was made when the gas burnt in the air. It was a French chemist, called Antoine Lavoisier, who named the gas hydrogen.
STP = standard temperature and pressure.
About hydrogen: Hydrogen gas is formed from molecules of hydrogen. Each molecule of hydrogen is made from two atoms of hydrogen chemically joined together. This makes hydrogen gas a diatomic gas.
Hydrogen atoms probably make up close to 90% of the matter in the universe. Stars, such as the Sun, are primarily made of hydrogen.
Hydrogen is classed as a non-metal although it can sometimes react like a metal.
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