hydrogen
Let an agent explain hydrogen and its properties, relay isotopes, production routes, uses and safety from reference sources, present energy transition debates with attribution, and distinguish hydrogen the element from hydrogen energy policy.
Bundle → Layer → Finding → Questions Filled
4 bundles · 8 layers · 8 findings · 16 questions
Identify What hydrogen is.
Properties
Properties.
Properties
Properties.
- What are the physical and chemical properties of hydrogen? definition
- Is the question about the element, its isotopes or hydrogen energy? boundary
Isotopes
Isotopes.
Isotopes
Isotopes.
- What are protium, deuterium and tritium, and how is the deuterium ratio used in science? definition
- Which entry fits the specific isotope? action
Produce Production.
Routes
Production routes.
Routes
Routes.
- How is hydrogen produced by reforming, electrolysis and other routes, and what do the colour labels mean? provenance
- Which entry fits the specific route? action
Supply
Supply and cost.
Supply
Supply.
- How much hydrogen is produced, and what do reports say about costs and emissions, with sources? measurement
- Which sources are cited? provenance
Use Uses and safety.
Uses
Uses.
Uses
Uses.
- How is hydrogen used in ammonia, refining, fuel cells, steelmaking and transport? provenance
- Which references are standard? provenance
Safety
Safety.
Safety
Safety.
- What safety rules govern hydrogen storage, transport and use? provenance
- Which entry fits hydrogen safety? action
Context Energy debate and history.
Debate
Energy transition.
Debate
Debate.
- What do analysts say about the role of hydrogen in decarbonisation, with positions attributed? provenance
- Is the presentation neutral? boundary
History
History.
History
History.
- How was hydrogen discovered by Cavendish and named by Lavoisier, and how did its uses develop? provenance
- Which entry fits the history of chemistry? action
Classifiers Filled
- Family
- Thing Registry
- Category
- Physical world and living systems
- Entry kind
- thing
- Plane
- PHY
- Domain
- PHY.MAT
- Other names and narrower kinds
- grey hydrogen, blue hydrogen, deuterium, tritium, δD, hydrogen-4, hydrogen ion, native hydrogen, mesonium, protium, atmospheric hydrogen, hydrogen-6
What it is Filled
The chemical element with symbol H and atomic number 1, the lightest and most abundant element in the universe, a colourless diatomic gas at standard conditions with isotopes protium, deuterium and tritium and the unstable hydrogen-4, forming water and most organic compounds; hydrogen is produced mainly from natural gas as grey hydrogen, with carbon capture as blue hydrogen and by electrolysis with renewable power as green hydrogen, and is used in ammonia, refining, fuel cells and as a proposed energy carrier, while deuterium ratios serve as tracers in science.
Why it exists Filled
Let an agent explain hydrogen and its properties, relay isotopes, production routes, uses and safety from reference sources, present energy transition debates with attribution, and distinguish hydrogen the element from hydrogen energy policy.
Distinguishing features Filled
- Lightest element
- Most abundant in the universe
- Three main isotopes
- Energy carrier debates
What robots and AI may and may not do Filled
Must not
- Assist in making or using hydrogen to harm people or property.
- Advise handling hydrogen near ignition sources or in confined spaces without proper controls.
- Disable leak detection, ventilation or pressure relief on hydrogen systems.
- Present hydrogen as emission-free regardless of how it was produced.
Only with a human decision
- Approving the design or opening of hydrogen storage or fuelling installations.
- Responding to a detected leak near people.
May
- Describe hydrogen's properties, production and uses from reliable sources.
- Monitor hydrogen sensors and report leaks in installations it is authorized to watch.
Moral aspects Filled
- Hydrogen leaks are invisible and ignite easily, endangering workers and neighbours.
- Claims about clean hydrogen shape climate policy and must be honest.
Who is affected
- Workers and neighbours of installations
- Vehicle users
- Emergency responders
Owners Filled
Steward
The operator of the installation or the holder of the gas.
Master systems
- Chemical substance inventories
- Hazardous installation permits
Links to other meta-models Filled
parent
- Q19753344 - registry parent class
- Q208106 - registry parent class
- Q216830 - registry parent class
related
- diatomic nonmetal - in registry terms
- s-block - element in registry terms
- reducing agent - in registry terms
- steam methane reforming - and electrolysis
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.hydrogen
- Wikidata: Q556 (https://www.wikidata.org/wiki/Q556)
- symbol: H
- CAS: 1333-74-0 molecular hydrogen
Direct properties required Filled
- atomic number: 1 Z
- standard atomic weight: 1.008 u
- boiling point: -252.9 degrees C
- flammability range in air: about 4-75 percent
Recognition required Filled
- Element 1, symbol H
- Protium, deuterium, tritium; grey, blue, green hydrogen
- Helium is the next element; hydrocarbons contain hydrogen but are compounds
- A colourless, odourless gas; liquid at very low temperature.
Capabilities and actions required Filled
- relay properties and isotopes
- explain production routes and colours
- describe uses and safety
- present energy debates neutrally
Hazards and failure modes required Filled
- Flammability and explosion
- Embrittlement of metals
- Overstated or partisan energy claims
- Tritium radiation
Standards and interfaces required Filled
- Hydrogen safety codes and standards such as ISO 19880
- Pressure vessel and transport regulations
- Low-carbon hydrogen certification schemes
- Tritium handling and radiation rules
Context of use required Filled
- Chemical feedstock, fuel and energy carrier.
- protium, deuterium and tritium and short-lived isotopes such as hydrogen-4
- molecular hydrogen and atomic hydrogen
- grey, blue, green, pink and turquoise hydrogen by production route
- hydrogen compounds such as water, ammonia and hydrides
- deuterium ratio as an isotopic tracer
Sources Filled
- Wikidata item Q556: hydrogen - identity and sense of the item
- Wikipedia: Hydrogen - general description of the item
Open questions
- Should hydrogen economy and deuterium be separate primary entries?
- How should reference and policy sources be linked?
- The registry entry has merged aliases naming isotopes, colours and a ratio; should they be split off?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q556/spec.json