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1. Hydrogen: Hydrogen (H) is an element comprising 1 proton and 1 electron. It is the only chemical element that normally doesn't have any neutrons in its atoms. [100%] 2023-02-19 [Elements]
2. Hydrogen: o = 16)], one of the chemical elements., water, and γεννάειν, to produce, in allusion to the fact that water is produced when the gas burns in air. Hydrogen appears to have been recognized by Paracelsus in the 16th century; the combustibility ... [100%] 2022-09-02
3. Hydrogen: Hydrogen is the chemical element with the symbol H and atomic number 1. Hydrogen is the lightest element. [100%] 2022-07-28 [Hydrogen] [Chemical elements]...
4. Hydrogen: Hydrogen is the most abundant of all the elements, and has the chemical symbol H and an atomic number of 1. Despite this abundance, naturally occurring elemental hydrogen is extremely rare on Earth. [100%] 2023-02-26
5. Hydrogen: The in-house PDF rendering service has been withdrawn. An independent open source renderer MediaWiki2LaTeX is available. For Help with downloading a Wikipedia page as a PDF, see Help:Download as PDF. (Chemistry) [100%] 2023-11-27 [Hydrogen]
6. Hydrogen: Hydrogen (chemical symbol H, atomic number 1) is the lightest chemical element and the most abundant of all elements, constituting roughly 75 percent of the elemental mass of the universe. Stars in the main sequence are mainly composed of hydrogen ... [100%] 2023-02-03
7. Hydrogen: Editor-In-Chief: C. Michael Gibson, M.S., M.D. [100%] 2023-05-31 [Hydrogen] [Chemical elements]...
8. Hydrogen: Hydrogen is a chemical element, typically found as a gas in its elemental form. It has the chemical symbol H, atomic number (number of protons) Z = 1, and a standard atomic weight of 1.00794 g•mol. [100%] 2022-09-06
9. Hydrogen: Hydrogen is the chemical element with the symbol H and atomic number 1. Hydrogen is the lightest element. (Chemistry) [100%] 2021-12-22 [Hydrogen] [Chemical elements]...
10. Hydrogen economy: The hydrogen economy is an umbrella term that draws together the roles hydrogen can play alongside renewable electricity to decarbonize specific economic sectors, sub-sectors and activities which may be technically difficult to decarbonize through other means, or where cheaper ... (Using hydrogen to decarbonize sectors which are hard to electrify) [70%] 2023-12-09 [Emerging technologies] [Fuel technology]...
11. Hydrogen system: The hydrogen system is ideal system of two objects held near each other by fundamental forces, with the ratio of the objects' masses equal to the ratio of the proton mass to the electron mass. The concept of hydrogen system ... [70%] 2023-03-03 [Theory of infinite nesting of matter] [Astronomical objects]...
12. Hydrogen chloride: The compound hydrogen chloride has the chemical formula HCl and as such is a hydrogen halide. At room temperature, it is a colourless gas, which forms white fumes of hydrochloric acid upon contact with atmospheric water vapor. (Chemistry) [70%] 2023-06-23 [Chlorides] [Halogen-containing natural products]...
13. Hydrogen ion: A hydrogen ion is created when a hydrogen atom loses an electron. A positively charged hydrogen ion (or proton) can readily combine with other particles and therefore is only seen isolated when it is in a gaseous state or a ... (Physics) [70%] 2023-11-26 [Hydrogen physics]
14. Hydrogen telluride: Hydrogen telluride is the inorganic compound with the formula H2Te. A hydrogen chalcogenide and the simplest hydride of tellurium, it is a colorless gas. (Chemistry) [70%] 2023-04-23 [Hydrogen compounds] [Triatomic molecules]...
15. Hydrogen fuel: Hydrogen fuel refers to hydrogen which is burned as fuel with oxygen. It is zero-carbon, provided that it is created in a process that does not involve carbon. (Physics) [70%] 2023-11-05 [Hydrogen technologies] [Industrial gases]...
16. Hydrogen damage: Hydrogen damage is the generic name given to a large number of metal degradation processes due to interaction with hydrogen atoms. Note that molecular gaseous hydrogen does not have the same effect as atoms or ions released into solid solution ... (Chemistry) [70%] 2023-08-26 [Corrosion] [Hydrogen]...
17. Hydrogen selenide: Template:Chembox new Editor-In-Chief: C. Michael Gibson, M.S., M.D. [70%] 2023-05-30 [Hydrogen compounds] [Selenides]...
18. Hydrogen dehydrogenase: In enzymology, a hydrogen dehydrogenase (EC 1.12.1.2) is an enzyme that catalyzes the chemical reaction Thus, the two substrates of this enzyme are H2 and NAD, whereas its two products are H and NADH. This enzyme belongs ... [70%] 2023-04-11 [EC 1.12.1] [NADH-dependent enzymes]...
19. Hydrogen narcosis: Hydrogen narcosis (also known as the hydrogen effect) is the psychotropic state induced by breathing hydrogen at high pressures. Hydrogen narcosis produces symptoms such as hallucinations, disorientation, and confusion, which are similar to hallucinogenic drugs. (Chemistry) [70%] 2022-10-11 [Breathing gases]
20. Hydrogen chloride: Template:Chembox new Articles Most recent articles on Hydrogen chloride Most cited articles on Hydrogen chloride Review articles on Hydrogen chloride Articles on Hydrogen chloride in N Eng J Med, Lancet, BMJ Media Powerpoint slides on Hydrogen chloride Images of ... [70%] 2023-03-08 [Hydrogen compounds] [Chlorides]...
21. Hydrogen trithionate: Hydrogen trithionate is a partially deprotonated oxyacid (specifically as polythionic acid) can also be considered to be a partially protonated oxyanion. It can either give up a proton to become trithionate or receive one to become trithionic acid. (Chemistry) [70%] 2022-10-19 [Amphoteric compounds] [Sulfur oxoacids]...
22. Hydrogen station: A hydrogen station is a storage or filling station for hydrogen. The hydrogen is dispensed by weight. (Physics) [70%] 2022-09-09 [Sustainable transport] [Gas technologies]...
23. Hydrogen thioperoxide: Hydrogen thioperoxide, also called oxadisulfane or sulfur hydride hydroxide, is the chemical with the structure H–S–O–H. It can be considered as the simple sulfur-substituted analog of the common hydrogen peroxide (H–O–O–H) chemical, and ... (Chemistry) [70%] 2023-09-07 [Peroxides] [Sulfur compounds]...
24. Hydrogen purity: Hydrogen purity or hydrogen quality describes the presence of impurities in hydrogen when used as a fuel gas. Impurities in hydrogen can interfere with the proper functioning of equipment that stores, distributes, or uses hydrogen fuel. (Physics) [70%] 2023-12-11 [Hydrogen] [Hydrogen technologies]...
25. Hydrogen valve: A hydrogen valve is a special type of valve that is used for hydrogen at very low temperatures or high pressures in hydrogen storage or for example hydrogen vehicles. High pressure ball valves up to 6000 psig (413 bar) at ... (Physics) [70%] 2022-10-13 [Valves] [Hydrogen technologies]...
26. Hydrogen bond: A hydrogen bond is an attractive interaction between two species that arises from a link of the form A-HB, where A and B are highly electronegative elements and B possesses a lone pair of electrons. Hydrogen bonding is conventionally ... [70%] 2023-02-14 [Chemical Bonding]
27. Hydrogen economy: The hydrogen economy is a term for an economic system in which hydrogen is used to store energy. Burning compressed hydrogen, a chemical compound (H2) could be used in fuel cells to produce energy without carbon dioxide emissions. [70%] 2023-02-19 [Ecology]
28. Hydrogen fluoride: Hydrogen fluoride is a chemical compound with the formula HF. Together with hydrofluoric acid, it is the principal industrial source of fluorine and hence the precursor to many important compounds including pharmaceuticals and polymers (e.g. [70%] 2023-08-09 [Fluorides] [Hydrogen compounds]...
29. Hydrogen sulfide: Hydrogen sulfide (or hydrogen sulphide) is a chemical compound with the formula H2S. It is a colorless, highly toxic, flammable gas with a characteristic foul odor. [70%] 2023-09-23
30. Hydrogen technologies: Hydrogen technologies are technologies that relate to the production and use of hydrogen as a part hydrogen economy. Hydrogen technologies are applicable for many uses. (Physics) [70%] 2023-11-10 [Hydrogen technologies] [Industrial gases]...
31. Slush hydrogen: Slush hydrogen is a combination of liquid hydrogen and solid hydrogen at the triple point with a lower temperature and a higher density than liquid hydrogen. It is commonly formed by repeating a freeze-thaw process. (Physics) [70%] 2023-11-15 [Hydrogen physics] [Hydrogen technologies]...
32. Triatomic hydrogen: Triatomic hydrogen or H3 is an unstable triatomic molecule containing only hydrogen. Since this molecule contains only three atoms of hydrogen it is the simplest triatomic molecule and it is relatively simple to numerically solve the quantum mechanics description of ... (Chemistry) [70%] 2024-01-20 [Hydrogen] [Allotropes]...
33. Natural hydrogen: Natural hydrogen (known as white hydrogen), is naturally occurring molecular hydrogen on or in Earth (as opposed to hydrogen produced in the laboratory or in industry). The name white hydrogen distinguishes it from green hydrogen, which is produced from renewable ... (Chemistry) [70%] 2023-05-01 [Hydrogen]