{ "model": { "rank": 9772, "code": "thing-q764285", "model_id": "vr.tr.chemical-property", "name": "chemical property", "purpose": "Let an agent explain chemical properties and distinguish them from physical properties, describe how they are measured and reported, and support safe handling based on them.", "family": "Thing Registry", "category": "Cross-cutting context", "status": "research-draft", "kind": "thing", "plane": "XCT", "domain": "XCT.QLT", "industry": "", "version": "", "url": "/models/thing/q764285/", "tier": 2, "score": 46, "payload": { "layer": "wikidata", "aliases": [ "thermal stability", "neutron number", "chromism", "acid strength", "molecular symmetry", "functionality", "electropositivity", "colligative property", "denticity", "Chemical affinity", "antiaromaticity", "bioreceptivity", "oxygen balance", "standard enthalpy of formation", "maficity", "reactivity", "felsicity", "hapticity", "limiting oxygen index", "pyrophoricity", "tonicity", "Magnetochromism", "ionochromism", "halochromism", "air sensitivity", "basicity" ], "aliasCount": 26, "merged": 26, "knownIn": 46, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": "vr.tr.chemical-property", "source": { "dataset": "wikidata", "item": "Q764285", "url": "https://www.wikidata.org/wiki/Q764285", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-11T21:19:23Z", "providers": [ "Claude" ], "breadth": "written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify", "pass": 2, "wave": 2, "engine": "claude" }, "metaModel": { "id": "THING-Q764285", "registryId": "vr.tr.chemical-property", "name": "chemical property", "version": "0.2.0-wave.2", "entryKind": "thing", "family": "Thing Registry", "domain": [ "XCT.QLT" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q764285/", "model": { "registry_id": "vr.tr.chemical-property", "name": "chemical property", "purpose": "Let an agent explain chemical properties and distinguish them from physical properties, describe how they are measured and reported, and support safe handling based on them.", "definition": "A property of a substance that becomes evident during or after a chemical reaction or that describes its chemical behaviour, such as reactivity, acid strength, oxidation states, flammability, thermal stability, chromism, toxicity and molecular symmetry, as distinct from physical properties that can be observed without changing composition.", "what_it_is_for": "Describing how substances behave chemically.", "affordances": [ "distinguish chemical and physical properties", "explain specific properties such as acid strength or reactivity", "find property data with sources", "relate properties to safety" ], "distinguishing_features": [ "Involves chemical change", "Substance-specific", "Measured under conditions", "Safety-relevant" ], "appearance": "Not physical; measured values and behaviours.", "visual_identification": [ "Evident through chemical change", "Examples: reactivity, flammability, acidity", "Melting point and density are physical properties" ], "physical_properties": [], "families_and_kinds": [ "reactivity and stability", "acid-base properties", "redox properties and oxidation states", "flammability and thermal stability", "structural properties such as symmetry and functionality" ], "related_models": [ { "relation": "is a kind of", "target": "physico-chemical property", "why": "category" }, { "relation": "is a kind of", "target": "property", "why": "category" }, { "relation": "is related to", "target": "physical property", "why": "contrast" }, { "relation": "is related to", "target": "chemical reaction", "why": "how properties show" } ], "identifiers": [], "standards_and_regulation": [ "Chemical classification and labelling systems", "Safety data sheet requirements", "Standard test methods" ], "failure_modes_and_hazards": [ "Misclassifying properties", "Ignoring conditions of measurement", "Unsafe handling from misread properties" ], "in_scope": [], "out_of_scope": [], "characteristics": [] }, "sources": [], "structure": { "bundles": [ { "id": "classify", "name": "Classify", "description": "Chemical or physical.", "rationale": "Distinction.", "layers": [ { "id": "distinguish", "name": "Distinguish", "description": "Classifying a property.", "findings": [ { "id": "distinguish-finding", "name": "Distinguish", "description": "Classification.", "questions": [ { "text": "Is this property chemical or physical, and why?", "kind": "definition" }, { "text": "Which borderline cases exist, such as chromism or neutron number?", "kind": "boundary" } ] } ] }, { "id": "examples", "name": "Examples", "description": "Common properties.", "findings": [ { "id": "examples-finding", "name": "Examples", "description": "Examples.", "questions": [ { "text": "What do reactivity, acid strength, thermal stability and flammability mean?", "kind": "definition" }, { "text": "How is molecular symmetry a property?", "kind": "definition" } ] } ] } ] }, { "id": "data", "name": "Data", "description": "Property values.", "rationale": "Sources.", "layers": [ { "id": "lookup", "name": "Lookup", "description": "Finding values.", "findings": [ { "id": "lookup-finding", "name": "Lookup", "description": "Lookup.", "questions": [ { "text": "What are the chemical properties of this substance, according to reference databases and safety data sheets?", "kind": "provenance" }, { "text": "Under which conditions were they measured?", "kind": "boundary" } ] } ] }, { "id": "measure", "name": "Measure", "description": "Measuring properties.", "findings": [ { "id": "measure-finding", "name": "Measure", "description": "Measurement.", "questions": [ { "text": "How are properties such as pKa, redox potential and decomposition temperature measured?", "kind": "provenance" }, { "text": "Which standard methods apply?", "kind": "provenance" } ] } ] } ] }, { "id": "safety", "name": "Safety", "description": "Properties and hazards.", "rationale": "Handling.", "layers": [ { "id": "hazards", "name": "Hazards", "description": "Hazard classification.", "findings": [ { "id": "hazards-finding", "name": "Hazards", "description": "Hazards.", "questions": [ { "text": "Which chemical properties determine the hazard classification of this substance?", "kind": "provenance" }, { "text": "How should it be stored and handled accordingly?", "kind": "provenance" } ] } ] }, { "id": "incident", "name": "Incident", "description": "Incidents.", "findings": [ { "id": "incident-finding", "name": "Incident", "description": "Incidents.", "questions": [ { "text": "Is there a chemical exposure or reaction incident now?", "kind": "boundary" }, { "text": "Which emergency information sources apply?", "kind": "provenance" } ] } ] } ] }, { "id": "learn", "name": "Learn", "description": "Teaching.", "rationale": "Education.", "layers": [ { "id": "teach", "name": "Teach", "description": "Teaching properties.", "findings": [ { "id": "teach-finding", "name": "Teach", "description": "Teaching.", "questions": [ { "text": "How can chemical versus physical properties be taught with demonstrations?", "kind": "action" }, { "text": "Which misconceptions arise?", "kind": "provenance" } ] } ] }, { "id": "predict", "name": "Predict", "description": "Predicting properties.", "findings": [ { "id": "predict-finding", "name": "Predict", "description": "Prediction.", "questions": [ { "text": "How are chemical properties predicted from structure, including computational methods?", "kind": "provenance" }, { "text": "What are the limits of prediction?", "kind": "boundary" } ] } ] } ] } ] }, "openQuestions": [ "Should each property type be a separate entry?", "How should property databases be linked?", "How should test methods be linked?" ], "statistics": { "bundles": 4, "layers": 8, "findings": 8, "questions": 16 } }, "draft": { "generator": "vr.draft.v3", "status": "draft-generated", "researched": false, "archetype": "abstract concept", "method": "Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.", "facetsInferred": true, "nextPass": "A researcher replaces this draft with a sourced specification. Treat every sentence below as a proposal to argue with.", "purpose": "Give an agent a durable, checkable way to recognise a chemical property, record what state it is in, and decide what may be done with it.", "whatItIs": "Let an agent explain chemical properties and distinguish them from physical properties, describe how they are measured and reported, and support safe handling based on them.", "characteristics": { "substance": "abstract", "origin": "conceptual", "agency": "inert" }, "whatYouCanDoWithIt": [ "observed and measured" ], "distinguishingFeatures": [ "Names folded into this entry, which a task may need to split apart again: thermal stability, neutron number, chromism, acid strength, molecular symmetry, functionality, electropositivity, colligative property, denticity, Chemical affinity, antiaromaticity, bioreceptivity.", "26 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 46 Wikipedia languages, which is a measure of how widely the thing is known, not of how important it is." ], "openQuestionsForResearch": [ "Which of the bundles below does a real task actually need, and which are ceremony?", "What does this thing have that the facets do not capture at all?", "Which neighbouring kind is most often confused with a chemical property, and on what evidence are they told apart?" ], "whatItIsMadeOf": "an abstraction with no physical instance", "physicalCharacter": [ "Does nothing on its own; everything it does, something else did to it.", "These come from the domain this entry sits in rather than from the entry itself, so treat them as a first guess about the whole domain applied to one thing." ], "whatCanBeDoneWithIt": [ "observe it, measure it, record its state" ], "howItIsRecognised": [ "Nothing to see. What is recognised is an instance of it, and which instances count is exactly what is argued about." ], "relatedModels": [ { "relation": "covers", "note": "Finer kinds folded into this entry because telling them apart needs a task that asks for it. Each is a model waiting to be split out when one does.", "targets": [ "thermal stability", "neutron number", "chromism", "acid strength", "molecular symmetry", "functionality", "electropositivity", "colligative property", "denticity", "Chemical affinity", "antiaromaticity", "bioreceptivity" ] } ], "standing": "Described in 46 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 26 finer distinctions are held inside this entry as names rather than as separate models.", "structure": { "bundles": [ { "id": "identity-and-classification", "name": "Identity, naming and classification", "description": "How an agent tells one chemical property from another, and a chemical property from things that resemble it.", "rationale": "Recognition comes before every other claim. Without stable identity nothing else in the model can be trusted to be about the same thing twice.", "layers": [ { "id": "naming-and-identifiers", "name": "Names and identifiers", "description": "The names this thing goes by and the identifiers that survive translation and time.", "findings": [ { "id": "preferred-name-and-aliases", "name": "Preferred name, aliases and local names", "description": "Which name to use, which names mean the same thing, and which merely sound similar.", "questions": [ { "id": "preferred-name-and-aliases-q01", "text": "What identifies and describes the name of a chemical property, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "preferred-name-and-aliases-q02", "text": "Who or what asserted this about the name of a chemical property, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "preferred-name-and-aliases-q03", "text": "What may an agent decide or do once the name of a chemical property is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "stable-identifiers", "name": "Stable identifiers and external keys", "description": "Identifiers that keep pointing at this kind of thing across systems and languages.", "questions": [ { "id": "stable-identifiers-q01", "text": "What identifies and describes an identifier for a chemical property, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stable-identifiers-q02", "text": "Who or what asserted this about an identifier for a chemical property, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stable-identifiers-q03", "text": "What may an agent decide or do once an identifier for a chemical property is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "classification-and-granularity", "name": "Classification and granularity", "description": "Where a chemical property sits among kinds, and how finely a task needs to cut it.", "findings": [ { "id": "kind-and-parents", "name": "Kind, parents and neighbouring kinds", "description": "The classes this thing belongs to and the ones it is next to.", "questions": [ { "id": "kind-and-parents-q01", "text": "What identifies and describes the kind of a chemical property, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "kind-and-parents-q02", "text": "Who or what asserted this about the kind of a chemical property, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "kind-and-parents-q03", "text": "What may an agent decide or do once the kind of a chemical property is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "distinguishing-features", "name": "Distinguishing features", "description": "What separates a chemical property from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a chemical property, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "distinguishing-features-q02", "text": "Who or what asserted this about what distinguishes a chemical property, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "distinguishing-features-q03", "text": "What may an agent decide or do once what distinguishes a chemical property is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "state-and-lifecycle", "name": "State and lifecycle", "description": "The states a chemical property passes through and the events that move it between them.", "rationale": "Most decisions about a thing depend on what state it is in now, which is a claim with a time on it, not a property.", "layers": [ { "id": "lifecycle-stages", "name": "Lifecycle stages", "description": "From coming into existence to ceasing to be one of these.", "findings": [ { "id": "stages-and-transitions", "name": "Stages and transitions", "description": "The stages worth naming and what moves a chemical property between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a chemical property, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stages-and-transitions-q02", "text": "Who or what asserted this about the lifecycle of a chemical property, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stages-and-transitions-q03", "text": "What may an agent decide or do once the lifecycle of a chemical property is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "observations-and-status", "name": "Observations and current status", "description": "What is observed about a chemical property, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a chemical property is recorded so that it can be superseded rather than overwritten.", "questions": [ { "id": "observation-record-q01", "text": "What identifies and describes an observation of a chemical property, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "observation-record-q02", "text": "Who or what asserted this about an observation of a chemical property, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "observation-record-q03", "text": "What may an agent decide or do once an observation of a chemical property is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "definitions-in-contest", "name": "Definitions and who holds them", "description": "What chemical property is taken to mean, and by whom.", "rationale": "When a field disagrees about a concept, the disagreement is the content. A model that picks one definition silently destroys the information.", "layers": [ { "id": "competing-definitions", "name": "Competing definitions", "description": "The main readings and the traditions behind them.", "findings": [ { "id": "definition-map", "name": "Definitions and their holders", "description": "Each definition with the school or body that holds it.", "questions": [ { "id": "definition-map-q01", "text": "Which definitions of chemical property are in use, and which tradition or body holds each?", "kind": "definition" }, { "id": "definition-map-q02", "text": "What turns on the difference between them in practice?", "kind": "boundary" } ] } ] }, { "id": "operationalisation", "name": "Operationalisation", "description": "How it is measured or applied when it has to be.", "findings": [ { "id": "operational-record", "name": "Measures and proxies", "description": "Instruments and indicators used to stand in for it.", "questions": [ { "id": "operational-record-q01", "text": "How is chemical property operationalised or measured in practice, and by what instrument?", "kind": "measurement" }, { "id": "operational-record-q02", "text": "What does that operationalisation leave out, and when does that matter?", "kind": "boundary" } ] } ] } ] }, { "id": "instances-and-use", "name": "Instances, use and consequence", "description": "What counts as an instance of chemical property and what follows from calling something that.", "rationale": "Applying a concept is an act with consequences, so a model must say what the label licenses and what it does not.", "layers": [ { "id": "instances", "name": "What counts as an instance", "description": "Clear cases, borderline cases and non-cases.", "findings": [ { "id": "instance-tests", "name": "Tests for an instance", "description": "What would settle whether something falls under it.", "questions": [ { "id": "instance-tests-q01", "text": "What would settle whether something is an instance of chemical property?", "kind": "boundary" }, { "id": "instance-tests-q02", "text": "Which borderline cases are argued about, and on what grounds?", "kind": "definition" } ] } ] }, { "id": "consequence", "name": "Consequence of application", "description": "Rights, duties or decisions that follow from the label.", "findings": [ { "id": "consequence-record", "name": "What the label licenses", "description": "What an agent may do once something is classified this way.", "questions": [ { "id": "consequence-record-q01", "text": "What follows practically once something is treated as chemical property?", "kind": "action" }, { "id": "consequence-record-q02", "text": "What must an agent not infer from the label alone?", "kind": "action" } ] } ] } ] }, { "id": "provenance-and-evidence", "name": "Provenance, evidence and time", "description": "Where every claim about a chemical property came from and when it held.", "rationale": "A claim without a source and a time cannot be superseded, only overwritten, and an agent that overwrites loses the ability to explain itself.", "layers": [ { "id": "source-and-authority", "name": "Source and authority", "description": "Who said it, on what evidence, and how strongly.", "findings": [ { "id": "claim-provenance", "name": "Claim provenance and confidence", "description": "The authority behind each claim about a chemical property and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a chemical property, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "claim-provenance-q02", "text": "Who or what asserted this about a claim about a chemical property, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "claim-provenance-q03", "text": "What may an agent decide or do once a claim about a chemical property is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "time-and-versions", "name": "Time, versions and supersession", "description": "When a claim was true, when it was learnt, and what replaced it.", "findings": [ { "id": "validity-and-supersession", "name": "Validity period and supersession", "description": "How an old claim about a chemical property is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a chemical property, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "validity-and-supersession-q02", "text": "Who or what asserted this about the validity of a claim about a chemical property, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "validity-and-supersession-q03", "text": "What may an agent decide or do once the validity of a claim about a chemical property is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] } ] }, "statistics": { "bundles": 5, "layers": 10, "findings": 12, "questions": 32 } } } }