{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.carbon","code":"thing-q623","url":"https://ver.cy/models/thing/q623/","name":"carbon","alternateNames":["carbon-11","hard carbon","carbon-12","Wikidata Sandbox 4","liquid carbon","Bush burning in Nigeria","carbon-19","carbon-16","carbon-17","carbon-22","carbon-21","carbon-20"],"kind":"thing","status":"published","version":"0.2.0-wave.2","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.MAT"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"The chemical element with atomic number six, a nonmetal that forms more compounds than any other element and is the basis of organic chemistry and life, occurring as allotropes including diamond, graphite, graphene, fullerenes, nanotubes and amorphous forms such as hard carbon, with isotopes including stable carbon-12 and carbon-13 and radioactive carbon-11 and carbon-14; carbon cycles through the atmosphere, oceans, rocks and living things, and its compounds are central to fuels, materials and climate.","purpose":"Let an agent explain carbon as an element, its allotropes, isotopes and chemistry, describe the carbon cycle and its role in climate, describe uses in materials and industry, and support learning.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Four valence electrons","Allotropy","Basis of organic chemistry","Biogeochemical cycling"],"structure":{"bundles":[{"id":"understand","name":"Understand","description":"What carbon is.","layers":[{"id":"element","name":"Element","description":"The element.","findings":[{"id":"element-finding","name":"Element","description":"Element.","questions":[{"text":"What are the properties of carbon as an element, and why does it form so many compounds?","kind":"definition"},{"text":"Is the element, a compound or a fuel meant?","kind":"boundary"}]}]},{"id":"allotropes","name":"Allotropes","description":"Allotropes and isotopes.","findings":[{"id":"allotropes-finding","name":"Allotropes","description":"Allotropes.","questions":[{"text":"How do diamond, graphite, graphene, fullerenes and amorphous carbon differ, and what are the isotopes of carbon?","kind":"definition"},{"text":"Which entry fits a specific allotrope?","kind":"action"}]}]}]},{"id":"cycle","name":"Cycle","description":"Carbon cycle and climate.","layers":[{"id":"cycle","name":"Cycle","description":"The carbon cycle.","findings":[{"id":"cycle-finding","name":"Cycle","description":"Cycle.","questions":[{"text":"How does carbon move between atmosphere, oceans, land and life, and how do human activities alter this?","kind":"provenance"},{"text":"Which entry fits climate change?","kind":"action"}]}]},{"id":"dating","name":"Dating","description":"Radiocarbon.","findings":[{"id":"dating-finding","name":"Dating","description":"Dating.","questions":[{"text":"How does carbon-14 dating work, and what are its limits?","kind":"definition"},{"text":"Which entry fits radiometric dating?","kind":"action"}]}]}]},{"id":"use","name":"Use","description":"Uses and materials.","layers":[{"id":"materials","name":"Materials","description":"Carbon materials.","findings":[{"id":"materials-finding","name":"Materials","description":"Materials.","questions":[{"text":"How are carbon fibres, graphene, activated carbon and carbon black used?","kind":"provenance"},{"text":"Which entry fits a specific material?","kind":"action"}]}]},{"id":"safety","name":"Safety","description":"Safety.","findings":[{"id":"safety-finding","name":"Safety","description":"Safety.","questions":[{"text":"What safety issues arise with carbon dusts and nanomaterials?","kind":"provenance"},{"text":"Which entry fits occupational safety?","kind":"action"}]}]}]},{"id":"learn","name":"Learn","description":"History and teaching.","layers":[{"id":"history","name":"History","description":"History.","findings":[{"id":"history-finding","name":"History","description":"History.","questions":[{"text":"How was carbon recognised as an element, and how were its allotropes discovered?","kind":"provenance"},{"text":"Which references are standard?","kind":"provenance"}]}]},{"id":"teach","name":"Teach","description":"Teaching.","findings":[{"id":"teach-finding","name":"Teach","description":"Teaching.","questions":[{"text":"How can carbon chemistry and the carbon cycle be taught?","kind":"action"},{"text":"Which misconceptions arise?","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Explain carbon, its allotropes and its role in life and chemistry.","Tell carbon apart from carbon dioxide in climate discussions.","Report carbon content or emissions from data the user provides."],"mustNot":["Confuse carbon with carbon dioxide when reporting emissions.","Ignore dust explosion risks when handling powdered carbon or coal.","Present nanomaterial forms of carbon as proven safe when evidence is limited.","Make misleading carbon-neutral claims."],"requiresHuman":["Publishing carbon accounting figures for an organisation."]},"ethics":{"considerations":["Carbon accounting shapes climate policy; misleading numbers erode trust.","Workers handling carbon dusts and nanomaterials face health risks."],"affectedParties":["Workers","The public","Future generations"]},"owners":{"steward":"Nobody owns the element; it is held in common.","roles":[],"masterSystems":[]},"relations":[{"target":"Q19753345","type":"parent","note":"registry parent class"},{"target":"polyatomic nonmetal","type":"related","note":"category"},{"target":"chemical element","type":"related","note":"category"},{"target":"solid","type":"related","note":"carbon allotropes as solids"},{"target":"glycoside","type":"related","note":"organic compounds of carbon"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.carbon","Wikidata: Q623 (https://www.wikidata.org/wiki/Q623)"]},"properties":{"applicability":"required","items":["Density:  g/cm3 - Determine mass per unit volume while specifying the allotrope, temperature and whether pores are included.","Electrical resistivity:  ohm m - Measure resistance using a defined specimen geometry and report the allotrope, temperature and measurement direction.","Thermal conductivity:  W/(m K) - Measure heat transport under a controlled temperature gradient and specify the allotrope, microstructure and measurement direction."]},"recognition":{"applicability":"required","items":["Atomic number six","Diamond, graphite and other allotropes","Carbon dioxide is a compound; carbon as a fuel means coal or charcoal","Black graphite, transparent diamond, or amorphous soot and charcoal."]},"capabilities":{"applicability":"required","items":["explain the element and allotropes","describe the carbon cycle","describe uses","support learning"]},"hazards":{"applicability":"required","items":["Confusing carbon with carbon dioxide in climate discussion","Combustible dust hazards","Nanomaterial safety uncertainties"]},"interfaces":{"applicability":"required","items":["Chemical nomenclature and isotope standards","Carbon emissions accounting rules","Safety rules for carbon materials and dusts"]},"context":{"applicability":"required","items":["Element six, basis of organic chemistry.","diamond","graphite and graphene","fullerenes and nanotubes","amorphous and hard carbon","carbon isotopes"]}},"sources":[{"title":"Wikidata item Q623: carbon","url":"https://www.wikidata.org/wiki/Q623","note":"identity and sense of the item"},{"title":"Wikipedia: Carbon","url":"https://en.wikipedia.org/wiki/Carbon","note":"general description of the item"}],"openQuestions":["Should each allotrope be a separate entry?","How should climate data be linked?","How should materials standards be linked?"],"resources":{"spec":"/models/things/publications/thing-q623/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q623/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-12T02:35:53Z","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 2026-10-07T10:10:32+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}