mixture
Let an agent handle mixtures by components, proportions and homogeneity, separate from compounds, and carry the hazards of mixed substances.
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 handle mixtures by components, proportions and homogeneity, separate from compounds, and carry the hazards of mixed substances.
A material made of two or more substances that are physically combined but not chemically bonded, which can in principle be separated by physical means; in cooking, a combination of ingredients such as mirepoix or baking powder.
What it is for: Most materials in daily life and industry are mixtures.
It can be prepare it, by combining components; separate it, by physical methods; analyse its composition; classify its hazards, for chemical mixtures.
Distinguishing features
Components retain their properties
Variable proportions, unlike compounds
Separable by physical means
Chemical mixtures are classified for hazard under GHS
What it looks like
Uniform (solutions, alloys) or visibly varied (salads, rocks, suspensions).
How it is recognised
Components may be visible (heterogeneous) or not (homogeneous)
Composition stated on labels and safety data sheets
Cooking bases such as mirepoix or the holy trinity are culinary mixtures
Related models
is confused with - bonded
is made of - components
has kind - examples
is regulated by - hazard classification
In practice
Families and kinds
homogeneous mixtures: solutions, alloys, air
heterogeneous mixtures: suspensions, emulsions
culinary mixtures
industrial and chemical preparations
Standards and regulation
EU CLP Regulation on mixture classification
UN GHS
Food labelling for ingredient mixtures
Failure modes and hazards
Dangerous mixing of incompatible chemicals such as bleach and ammonia
Unlabelled components
Assuming a mixture is uniform when it separates
Also called
+247
Where this came from
wikidata · CC0 1.0
Also registered as vr.tr.mixture
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Composition What is in it.
Components and proportions define a mixture.
Components
Substances.
Components
The components.
- What components does the mixture contain? definition
- In what proportions? measurement
Homogeneity
Uniform or not.
Homogeneity
Uniformity.
- Is it homogeneous or heterogeneous? definition
- Does it separate over time? boundary
Preparation and separation Making and splitting.
Physical processes make and separate mixtures.
Preparation
How it is made.
Preparation
How it is prepared.
- How is it prepared? action
- In what order are components added? action
Separation
Methods.
Separation
Separation methods.
- How can it be separated? definition
- Is separation needed for disposal? boundary
Hazards Classification and safety.
Mixing can create hazards.
Classification
GHS for mixtures.
Classification
Hazard classification.
- How is the mixture classified for hazards? provenance
- Is a safety data sheet available? provenance
Incompatibility
Dangerous combinations.
Incompatibility
What must not be mixed.
- Could mixing these components release toxic gases or heat? boundary
- What should be done instead? action
Use Applications.
Uses range from cooking to industry.
Application
Where it is used.
Use
Uses.
- What is the mixture used for? definition
- What quality is needed? measurement
Labelling
Declaring contents.
Labelling
Label requirements.
- How must the mixture be labelled? boundary
- Which allergens or hazards must be declared? boundary
What the second pass must settle
- Should chemical and culinary mixtures be separate entries?
- How should composition ranges be recorded?
- How should agents warn about dangerous mixing?