Stars, including the Sun, mainly consist of hydrogen in a plasma state, while on Earth, hydrogen is found as the gas H2 (dihydrogen) and in molecules, such as in water and organic compounds. The most …

Dec 7, 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 CAS登录号 1333-74-0 EINECS登录号 215-605-7 熔 点 -259.23 ℃ [7] 沸 点 -253.77 ℃ [7] 水溶性 0.00017 g / 100mL 密 度 0.07 g/cm³ [3]（-252℃） 外 观 无色无味气体 应 用 肥料生产、氢气 …

Dec 13, 2025 · Hydrogen (H 2) has received increased attention as an energy carrier to help decarbonize heavy industry and transport and to provide long-duration energy storage 1. When …

6 days ago · New research shows rising hydrogen emissions since 1990 have indirectly intensified climate change and amplified the impact of methane. Limiting leaks from future hydrogen fuel …

5 days ago · Although hydrogen constitutes nearly 75% of all the universe’s matter, only a small fraction of the hydrogen accessible on Earth exists in a pure state (not bonded to other elements).

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 …

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

Get to know the basics about hydrogen as an energy carrier, its role as a fuel and the potentialities in delivering net zero.

Hydrogen is a feedstock and energy carrier used in multiple sectors. Global hydrogen demand reached 97 Mt in 2023, a 2.5% increase from 2022, with 10 Mt in the U.S. 1,2 Hydrogen is the most abundant …