hydrogen chloride
— Navneord
– Engelsk
～ a colorless corrosive gas (HCl)
hydrogen
— Navneord
– Engelsk
～ a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe
hydrogen fluoride
— Navneord
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～ a colorless poisonous corrosive liquid made by the action of sulphuric acid on calcium fluoride; solutions in water are hydrofluoric acid
hydrogen bond
— Navneord
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～ a chemical bond consisting of a hydrogen atom between two electronegative atoms (e.g., oxygen or nitrogen) with one side be a covalent bond and the other being an ionic bond
hydrogen cyanide
— Navneord
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～ a highly poisonous gas or volatile liquid that smells like bitter almonds; becomes a gas at around 90 degree Fahrenheit and is most dangerous when inhaled; the anhydride of hydrocyanic acid; used in manufacturing
hydrogen bomb
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～ a nuclear weapon that releases atomic energy by union of light (hydrogen) nuclei at high temperatures to form helium
hydrogen carbonate
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～ a salt of carbonic acid (containing the anion HCO3) in which one hydrogen atom has been replaced; an acid carbonate
hydrogen atom
— Navneord
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～ an atom of hydrogen
hydrogenate
— Udsagnsord
– Engelsk
～ combine or treat with or expose to hydrogen; add hydrogen to the molecule of (an unsaturated organic compound)
hydrogenation
— Navneord
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～ a chemical process that adds hydrogen atoms to an unsaturated oil; "food producers use hydrogenation to keep fat from becoming rancid"
hydrographic
— Tillægsord
– Engelsk
～ of or relating to the science of hydrography
hydrographical
— Tillægsord
– Engelsk
～ of or relating to the science of hydrography
hydrography
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～ the science of the measurement and description and mapping of the surface waters of the earth with special reference to navigation
hydroid
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～ colonial coelenterates having the polyp phase dominant
hydroiodic acid
— Navneord
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～ an acid formed by aqueous solution of hydrogen iodide
hydrokinetic
— Tillægsord
– Engelsk
～ relating to fluids in motion or the forces that produce or affect such motion
hydrokinetics
— Navneord
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～ study of fluids in motion
hydrolise
— Udsagnsord
– Engelsk
～ make a compound react with water and undergo hydrolysis
hydrolith
— Navneord
– Engelsk
～ a saltlike binary compound (CaH2) used as a reducing agent and source of hydrogen
hydrolize
— Udsagnsord
– Engelsk
～ make a compound react with water and undergo hydrolysis