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.

Nov 27, 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.’

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 forms different …

Nov 28, 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 applications …

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

Hydrogen is a clean alternative to methane, also known as natural gas. It's the most abundant chemical element, estimated to contribute 75% of the mass of the universe. Here on earth, vast numbers of …

What Is Hydrogen? The Ultimate Guide Introduction Hydrogen is the simplest and most abundant element in the universe, making up about 75% of all normal matter. Yet, despite its simplicity, …

May 16, 2025 · Hydrogen isn’t just a buzzword—it’s transforming industries from energy to aviation. Hydrogen is primarily used in refining, ammonia production, fuel cells, metal treatment, and rocket …

Nov 27, 2025 · Hydrogen won’t save the planet alone, but we won’t reach net zero without it. The solutions are seen as costly today, but will be indispensable tomorrow.

Nov 24, 2025 · Producing hydrogen to fuel heavy transport and industry is energy intensive and expensive. A Berkeley chemist has overcome one roadblock to producing low-cost, green hydrogen …