Gas
11 elements
Hydrogen
Lightest element. Makes up 75% of all normal matter by mass. Stars are mostly hy...
Helium
Discovered in the Sun before it was found on Earth, via solar spectrum analysis....
Nitrogen
Makes up 78% of Earths atmosphere. Essential for amino acids, DNA, and proteins....
Oxygen
The third most abundant element in the universe. Makes up 21% of Earths atmosphe...
Fluorine
The most reactive and electronegative element. Reacts with almost every other el...
Neon
The fifth most abundant element in the universe but rare on Earth. Neon signs pr...
Chlorine
Yellow-green gas with a choking smell. Used to purify drinking water worldwide, ...
Argon
The third most abundant gas in Earths atmosphere at 0.93%. Used in welding to pr...
Krypton
Not from Supermans home planet, the element came first. Used in high-performance...
Xenon
The name means stranger in Greek, as it was unexpected. Used in high-intensity l...
Radon
A radioactive gas that seeps from soil and rock into basements, and the second l...