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 …

Aug 17, 2024 · Hydrogen is a gas that naturally exists in the universe. It is the first element of the periodic table and occurs on Earth in vast quantities of water in the ocean, the ice packs, rivers …

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, …

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 estimated to make up more than 90% of all the atoms three quarters of the mass of the universe! This element is found in the stars, and plays an important part in powering the …

Nov 3, 2025 · Hydrogen fuel is one of the most misunderstood energy technologies, and has been for several decades now. It's associated not only with the glossy, pollution-free super cities of …

Jan 21, 2025 · What is Hydrogen? Hydrogen is the simplest and most abundant element in the universe, consisting of just one proton and one electron. This lightweight, colorless gas is …