Hydrogen is a chemical element; it has the symbol H and atomic number 1. It is the lightest and most abundant chemical element in the universe, constituting about 75% of all normal matter.

Oct 17, 2025 · The earliest known chemical property of hydrogen is that it burns with oxygen to form water; indeed, the name hydrogen is derived from Greek words meaning ‘maker of water.’

Nov 4, 2025 · Hydrogen has been described as the “Swiss army knife” of energy because it plays a key role in several sectors where there are limited or no viable alternatives (including in …

Hydrogen occurs naturally on earth in compound form with other elements in liquids, gases, or solids. Hydrogen combined with oxygen is water (H 2 O). Hydrogen combined with carbon …

The hydrogen molecules are extremely small, so they can easily penetrate water and stay dissolved for a while [1]. Hydrogen-rich water has recently gained significant attention as a …

2 days ago · Hydrogen Could Be the Secret to Unlimited Energy—And Scientists Just Found a New Way to Unlock It This discovery is 400 years in the making.

Element Hydrogen (H), Group 1, Atomic Number 1, s-block, Mass 1.008. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.

What Is Hydrogen Fuel? Hydrogen fuel is an abundant, energy-dense fuel source that can be reacted to create electricity, while producing zero carbon or other greenhouse gas emissions.

Hydrogen is one of the three most abundant elements present on Earth. It was discovered in 1766 by Henry Cavendish and is widely used for various industrial, medical and recreational purposes.

6 days ago · Low-emission hydrogen is quickly becoming the latest frontier for geoeconomic competition.