{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.oxygen","code":"thing-q629","url":"https://ver.cy/models/thing/q629/","name":"oxygen","alternateNames":["dark oxygen","oxygen-23","oxygen-20","oxygen-21","oxygen-22","oxygen-24","oxygen-12","oxygen-13","oxygen-25","oxygen-26","oxygen-27","oxygen-28"],"kind":"thing","status":"published","version":"0.2.0-wave.3","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.MAT"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A chemical element with symbol O and atomic number 8, a highly reactive non-metal and oxidising agent that forms diatomic oxygen gas making up about 21 percent of the atmosphere, the ozone allotrope, and compounds with most elements including water and oxides; oxygen is essential to respiration in most organisms, is produced by photosynthesis and by air separation for industry and medicine, and has three stable isotopes, with dark oxygen a reported deep-sea production process under study.","purpose":"Let an agent identify oxygen and its properties, relay its biological, atmospheric and industrial roles, relay medical oxygen and safety information from authoritative sources, and distinguish the element from its allotropes and compounds.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Strong oxidiser","Essential to aerobic life","Produced by photosynthesis","Most abundant element in the crust"],"structure":{"bundles":[{"id":"identify","name":"Identify","description":"What oxygen is.","layers":[{"id":"properties","name":"Properties","description":"Properties and allotropes.","findings":[{"id":"properties-finding","name":"Properties","description":"Properties.","questions":[{"text":"What are the properties of oxygen, and how do dioxygen and ozone differ?","kind":"definition"},{"text":"Is the question about the element, an allotrope or a compound?","kind":"boundary"}]}]},{"id":"isotopes","name":"Isotopes","description":"Isotopes.","findings":[{"id":"isotopes-finding","name":"Isotopes","description":"Isotopes.","questions":[{"text":"Which isotopes exist, and how are oxygen-18 ratios used in climate science?","kind":"definition"},{"text":"Which entry fits the specific isotope?","kind":"action"}]}]}]},{"id":"life","name":"Life","description":"Biology and atmosphere.","layers":[{"id":"biology","name":"Biology","description":"Respiration and photosynthesis.","findings":[{"id":"biology-finding","name":"Biology","description":"Biology.","questions":[{"text":"How do organisms produce and use oxygen?","kind":"provenance"},{"text":"Which entry fits cellular respiration?","kind":"action"}]}]},{"id":"atmosphere","name":"Atmosphere","description":"Atmosphere and history.","findings":[{"id":"atmosphere-finding","name":"Atmosphere","description":"Atmosphere.","questions":[{"text":"How did atmospheric oxygen arise, and what is known about dark oxygen production in the deep sea, with findings attributed?","kind":"provenance"},{"text":"Which references are standard?","kind":"provenance"}]}]}]},{"id":"use","name":"Use","description":"Industry and medicine.","layers":[{"id":"industry","name":"Industry","description":"Industrial uses.","findings":[{"id":"industry-finding","name":"Industry","description":"Industry.","questions":[{"text":"How is oxygen produced and used in steelmaking, chemicals and rocketry?","kind":"provenance"},{"text":"Which entry fits air separation?","kind":"action"}]}]},{"id":"medical","name":"Medical","description":"Medical oxygen.","findings":[{"id":"medical-finding","name":"Medical","description":"Medical.","questions":[{"text":"How is medical oxygen regulated and used, in general terms?","kind":"provenance"},{"text":"Is the user asking about their own oxygen therapy, which needs a clinician?","kind":"boundary"}]}]}]},{"id":"safety","name":"Safety","description":"Safety and history.","layers":[{"id":"hazards","name":"Hazards","description":"Hazards.","findings":[{"id":"hazards-finding","name":"Hazards","description":"Hazards.","questions":[{"text":"What fire, toxicity and hypoxia hazards involve oxygen, and what rules apply?","kind":"provenance"},{"text":"Which entry fits oxygen safety?","kind":"action"}]}]},{"id":"history","name":"History","description":"History.","findings":[{"id":"history-finding","name":"History","description":"History.","questions":[{"text":"How was oxygen discovered by Scheele, Priestley and Lavoisier, and how did it end the phlogiston theory?","kind":"provenance"},{"text":"Which sources are cited?","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Explain oxygen's chemistry, its role in respiration and combustion, and the ozone layer.","Report oxygen levels from sensors in spaces the agent is authorized to monitor.","Point people with breathing problems to clinicians for oxygen therapy questions."],"mustNot":["Advise starting, stopping or changing someone's prescribed oxygen therapy.","Recommend smoking, open flames or oily materials near oxygen equipment or enriched atmospheres.","Advise entering a space with low or unmeasured oxygen without proper testing and rescue arrangements.","Promote oxygen products with unproven health claims."],"requiresHuman":["Changing the oxygen supply in a medical, diving or industrial setting.","Declaring a confined space safe to enter."]},"ethics":{"considerations":["Too little oxygen kills in minutes and too much fuels fires and harms the lungs and brain.","Medical oxygen is a scarce, life-saving resource in many places; access to it is a matter of equity."],"affectedParties":["Patients on oxygen therapy","Divers and confined space workers","Hospital staff and carers"]},"owners":{"steward":"Nobody owns the element; suppliers, hospitals and operators of oxygen systems answer for their supply.","roles":[],"masterSystems":[]},"relations":[{"target":"Q104567","type":"parent","note":"registry parent class"},{"target":"Q187689","type":"parent","note":"registry parent class"},{"target":"chalcogen","type":"related","note":"group 16"},{"target":"oxidizing agent","type":"related","note":"in registry terms"},{"target":"photosynthesis","type":"related","note":"in the biosphere"},{"target":"cellular respiration","type":"related","note":"in aerobic life"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.oxygen","Wikidata: Q629 (https://www.wikidata.org/wiki/Q629)","symbol: O","CAS: 7782-44-7"]},"properties":{"applicability":"required","items":["atomic number: 8 Z","standard atomic weight: 15.999 u","boiling point: -183 degrees C","share of atmosphere: about 20.9 percent - by volume"]},"recognition":{"applicability":"required","items":["Element 8, symbol O, diatomic gas","21 percent of air","Ozone is an allotrope; oxides and water are compounds","A colourless, odourless gas; pale blue as a liquid."]},"capabilities":{"applicability":"required","items":["relay properties and isotopes","explain biological and atmospheric roles","relay industrial and medical uses","relay safety information"]},"hazards":{"applicability":"required","items":["Fire and explosion in oxygen-enriched atmospheres","Oxygen toxicity at high partial pressures","Hypoxia when oxygen is depleted","Agents giving personal medical advice on oxygen therapy"]},"interfaces":{"applicability":"required","items":["Medical oxygen pharmacopoeia standards","Compressed and cryogenic gas safety standards","Oxygen-enriched atmosphere fire rules","Ozone and air quality regulation"]},"context":{"applicability":"required","items":["Respiration, combustion, industry and medicine.","dioxygen gas and liquid oxygen","ozone","isotopes oxygen-16, 17 and 18 stable, with radioactive isotopes from oxygen-11 to oxygen-28","medical and industrial oxygen","dark oxygen as a reported deep-sea process"]}},"sources":[{"title":"Wikidata item Q629: oxygen","url":"https://www.wikidata.org/wiki/Q629","note":"identity and sense of the item"},{"title":"Wikipedia: Oxygen","url":"https://en.wikipedia.org/wiki/Oxygen","note":"general description of the item"}],"openQuestions":["Should ozone and medical oxygen be separate primary entries?","How should safety standards be linked?","The registry entry has merged aliases naming isotopes and a research topic; should they be split off?"],"resources":{"spec":"/models/things/publications/thing-q629/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q629/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-12T23:27:52Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-06T19:52:01+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}