base
Let an agent explain bases and the theories that define them, relay properties, examples, strength and reactions from chemistry references, describe uses and safety at the level of public guidance, and distinguish bases from alkalis, from acids, from protic solvents and from the many other senses of base.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent explain bases and the theories that define them, relay properties, examples, strength and reactions from chemistry references, describe uses and safety at the level of public guidance, and distinguish bases from alkalis, from acids, from protic solvents and from the many other senses of base.
In chemistry, a substance that accepts protons, donates electron pairs or produces hydroxide ions in water, according to the Bronsted-Lowry, Lewis and Arrhenius definitions, including strong bases such as the alkali hydroxides of sodium, potassium and rubidium, weak bases such as ammonia, conjugate bases formed when acids lose protons, and organic bases such as amines; bases neutralise acids, feel slippery, turn litmus blue and are used in industry, cleaning and biology.
What it is for: Not applicable; a class of substances.
It can be explain definitions and kinds; relay properties and reactions; describe uses and safety; distinguish related concepts.
Distinguishing features
Proton acceptor
Neutralises acids
Several definitions
Strong and weak
What it looks like
Not a visible object; solids or solutions, often caustic.
Physical character
pH of bases: above 7 note - in water
strong bases: NaOH, KOH, RbOH, CsOH list
Bronsted-Lowry theory: 1923 year
How it is recognised
Proton acceptor or hydroxide producer
Alkali hydroxides, weak bases, conjugate bases, amines
Alkalis are water-soluble bases; acids donate protons; protic solvents and acid radicals are different concepts listed as aliases
Related models
is a kind of - in registry terms
is contrasted with - a proton donor
is exemplified by - a strong base
is defined by - among others
In practice
Families and kinds
strong bases such as alkali hydroxides
weak bases such as ammonia and amines
conjugate bases of acids
Lewis bases as electron pair donors
organic and biological bases such as nucleobases
superbases
Identifiers
ChEBI CHEBI:22695 base
Standards and regulation
Chemical safety and labelling regulations for caustic substances
IUPAC definitions
Occupational exposure limits
Failure modes and hazards
Chemical burns from strong bases
Confusing base with alkali or with other senses
Registry aliases naming a solvent class, an isotope-labelled compound and an obsolete term
Also called
Where this came from
wikidata · CC0 1.0
Also registered as vr.tr.base-3
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Understand What a base is.
Science.
Definition
Definitions.
Definition
Definition.
- What is a base under the Arrhenius, Bronsted-Lowry and Lewis definitions, and how does it differ from an alkali and an acid? definition
- Is the question about chemistry or another sense of base? boundary
Kinds
Kinds.
Kinds
Kinds.
- What are strong and weak bases, conjugate bases, Lewis bases and organic bases? definition
- Which entry fits the specific base? action
Chemistry Properties and reactions.
Science.
Properties
Properties.
Properties
Properties.
- What are the properties of bases, and how are strength and pH related? provenance
- Which references are standard? provenance
Reactions
Reactions.
Reactions
Reactions.
- How do bases neutralise acids, catalyse reactions and act in buffers? provenance
- Which sources are cited? provenance
Use Uses and safety.
Application.
Uses
Uses.
Uses
Uses.
- How are bases used in industry, cleaning, agriculture and biology? provenance
- Which entry fits the specific application? action
Safety
Safety.
Safety
Safety.
- What safety guidance applies to caustic bases at home and work? provenance
- Is the presentation at the level of public safety guidance? boundary
Context History and aliases.
Context.
History
History.
History
History.
- How did the concept of base develop from alkalis to modern acid-base theories? provenance
- Which entry fits acid-base reaction? action
Aliases
Registry aliases.
Aliases
Aliases.
- What are protic solvents, acid radicals and rubidium-81 hydroxide, and why do they appear as aliases? provenance
- Which entry fits the specific alias? action
What the second pass must settle
- Should alkali and conjugate base be separate primary entries?
- How should chemistry references be linked?
- The registry entry has merged aliases naming protic solvents, acid radicals and a rubidium-81 hydroxide; should they be split off?