Published
bismuth
vr.tr.bismuth · thing-q942
Let an agent explain bismuth and its properties and isotopes, describe its uses and production, relay safety information, and support chemistry learning.
Thing Registry Physical world and living systems PHY.MAT
Bundle → Layer → Finding → QuestionsClassifiersWhat it isWhy it existsDistinguishing featuresWhat robots and AI may and may not doMoral aspectsOwnersLinks to other meta-modelsIdentity and identifiersDirect propertiesRecognitionCapabilities and actionsHazards and failure modesStandards and interfacesContext of useSources
Bundle → Layer → Finding → Questions Filled
4 bundles · 8 layers · 8 findings · 16 questions
Understand What bismuth is.
Properties
Properties.
Properties
Properties.
- What are the physical and chemical properties of bismuth, and why is it so diamagnetic and colourful in crystals? definition
- How does it compare with lead and antimony? definition
Isotopes
Isotopes.
Isotopes
Isotopes.
- What is known about bismuth isotopes, including the extremely long half-life of bismuth-209? provenance
- Which entry fits a specific isotope? action
Use Uses and production.
Uses
Uses.
Uses
Uses.
- How is bismuth used in medicines, cosmetics, alloys, solders, shot and pigments? provenance
- Which entry fits a specific application? action
Production
Production.
Production
Production.
- How and where is bismuth produced, and what are its supply and price dynamics? provenance
- Which entry fits metal refining? action
Safety Safety and health.
Toxicity
Toxicity.
Toxicity
Toxicity.
- What is known about bismuth toxicity and the safety of bismuth medicines, according to health sources? provenance
- Is the user asking about their own medication, which needs a clinician? boundary
Handling
Handling.
Handling
Handling.
- How is bismuth handled safely in the laboratory and hobby crystal growing? provenance
- Which entry fits laboratory safety? action
Learn History and teaching.
History
History.
History
History.
- How was bismuth identified as an element, and how were its uses discovered? provenance
- Which references are standard? provenance
Teach
Teaching.
Teach
Teaching.
- How can bismuth be used to teach crystals and diamagnetism? action
- Which misconceptions arise? provenance
Classifiers Filled
- Family
- Thing Registry
- Category
- Physical world and living systems
- Entry kind
- thing
- Plane
- PHY
- Domain
- PHY.MAT
- Other names and narrower kinds
- bismuth-184, bismuth-184m, bismuth-185, bismuth-185m, bismuth-186, bismuth-186m, bismuth-187, bismuth-187m1, bismuth-187m2, bismuth-188, bismuth-188m, bismuth-189
What it is Filled
A chemical element with atomic number 83, a brittle silvery-pink heavy metal that is the most diamagnetic element, has low toxicity compared with its neighbours lead and polonium, forms colourful oxide-layer crystals, and occurs as many isotopes of which bismuth-209 is effectively stable with an extremely long half-life; bismuth is used in pharmaceuticals, cosmetics, low-melting alloys, lead-free solders and shot, and is produced mainly as a by-product of lead and copper refining.
Why it exists Filled
Let an agent explain bismuth and its properties and isotopes, describe its uses and production, relay safety information, and support chemistry learning.
Distinguishing features Filled
- Most diamagnetic element
- Low toxicity for a heavy metal
- Long-lived isotope 209
- Low-melting alloys
What robots and AI may and may not do Filled
Must not
- Recommend taking bismuth medicines beyond the labelled dose or duration.
- Sell or label a bismuth item as lead, or a lead item as bismuth.
- Present bismuth-209 as a radiation hazard in everyday use, or deny its extremely slow decay.
- Advise heating bismuth or its compounds without ventilation and protective measures.
Only with a human decision
- Advising on bismuth medication for a specific person, such as a child or someone with kidney disease.
May
- Explain bismuth's properties, including its strong diamagnetism and low toxicity relative to lead.
- Describe its uses in alloys, pharmaceuticals, cosmetics and lead-free solder.
- Relay safety information for bismuth compounds from authoritative sources.
Moral aspects Filled
- Bismuth is promoted as a safe lead substitute, so false claims about composition put people at risk.
- Mining and refining it as a by-product of lead and copper carries the pollution of those industries.
Who is affected
- Patients taking bismuth medicines
- Hobbyists and metalworkers
- Communities near smelters
Owners Filled
Steward
The person or business that holds it; chemicals regulators set the rules for its compounds.
Master systems
- National and regional chemical substance registries
Links to other meta-models Filled
parent
- Q105789 - registry parent class
related
- heavy metal - category
- simple substance - elemental forms
- organochlorine compound - another chemistry entry
- fundamental quantity - measurement of properties
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.bismuth
- Wikidata: Q942 (https://www.wikidata.org/wiki/Q942)
Direct properties required Filled
- Mass density: Approximately 9.78 g/cm3 - This approximate value applies to solid elemental bismuth near room temperature.
- Melting point: Approximately 271.4 degrees Celsius - This approximate value applies to pure elemental bismuth at atmospheric pressure.
- Molar mass: Approximately 208.98 g/mol - This approximate value applies to naturally occurring bismuth.
Recognition required Filled
- Element 83
- Iridescent oxide crystals
- Lead and antimony are neighbouring elements with different properties
- Silvery-pink brittle metal, often as iridescent stepped crystals.
Capabilities and actions required Filled
- explain properties and isotopes
- describe uses and production
- relay safety information
- support learning
Hazards and failure modes required Filled
- Rare toxicity from excessive medicinal use
- Confusing with lead
- Radioactivity misconceptions about bismuth-209
Standards and interfaces required Filled
- Chemical safety data sheets
- Pharmacopoeial standards for bismuth medicines
- Lead-free product regulations
Context of use required Filled
- A heavy metal element.
- bismuth metal and alloys
- bismuth compounds in medicine
- bismuth isotopes
- bismuth minerals and ores
- bismuth in electronics and pigments
Sources Filled
- Wikidata item Q942: bismuth - identity and sense of the item
- Wikipedia: Bismuth - general description of the item
Open questions
- Should isotopes be separate entries?
- How should safety data be linked?
- How should production statistics be linked?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q942/spec.json