Hydrogen (H) Fun Facts
"Captain Universe, the simplest, lightest, and most common hero, fueling the very stars."
The true essence of Hydrogen (H) on the molecular frontier.
A colorless, odorless, tasteless gas.
The water you drink and the airships of classic science fiction
The fuel for the Hindenburg airship and starships in 'Star Trek'.
Test your knowledge with more interactive quizzes on the periodic table.
Reinforce what you learned with quick flashcard decks.
Master the elements with smart drills and rapid-fire revision sessions.
Did You Know?
It is the most abundant chemical substance in the universe, constituting roughly 75% of all baryonic mass.
It's the only element that can exist without neutrons; its most common isotope (protium) is just one proton and one electron.
Hydrogen gas is so light that Earth's gravity is not strong enough to hold it, and it floats off into space.
The Sun and other stars are composed primarily of hydrogen, which they convert to helium through nuclear fusion to produce energy.
When cooled to extremely low temperatures, hydrogen becomes a liquid metal, a state that may exist in the cores of gas giants like Jupiter.